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{{Short description|Part of speech that defines a noun or pronoun}}
{{Use dmy dates|date=December 2019}}
An '''adjective''' ([[abbreviations|abbreviated]] {{sc|'''ADJ'''}}) is a word that describes or defines a [[noun]] or [[noun phrase]]. Its semantic role is to change information given by the noun.
The adjective can be considered one of the main [[part of speech|parts of speech]] of the English language, although historically they were classed together with [[Noun|nouns]].<ref name="Trask">{{Cite book |last=Trask |first=R.L. |author-link=Larry Trask |title=A Dictionary of Grammatical Terms in Linguistics |date=2013 |publisher=Taylor & Francis |isbn=978-1-134-88420-9 |page=188}}</ref> Nowadays, certain words that usually had been classified as adjectives, including ''the'', ''this'', ''my'', etc., typically are classed separately, as [[Determiner (class)|determiners]].

Examples:

* That used to be an immensely ''funny'' idea. (Prepositive [[attributive]])
* That idea is ''funny''. ([[Predicate (grammar)|Predicative]])
* {{nowrap|Tell me something ''funny''. ([[postpositive adjective|Postpositive]] attributive)}}
* The ''good'', the ''bad'', and the ''funny''. ([[Substantive adjective|Substantive]])
* [[Clara Oswald]], completely ''funny'', died three times. ([[Apposition|Appositive]])

==Etymology==
{{see also|Part of speech#History|Noun#History}}''Adjective'' comes from [[Latin]] ''{{lang|la|nōmen adjectīvum}}'',<ref>{{L&S|adjectivus|ref}}</ref> a [[calque]] of {{langx|grc|ἐπίθετον ὄνομα (surname)|epítheton ónoma|additional name}} (whence also English ''[[epithet]]'').<ref>{{LSJ|e)pi/qetos|ἐπίθετος|ref}}</ref><ref>Mastronarde, Donald J. ''Introduction to Attic Greek''. University of California Press, 2013. [https://books.google.com/books?id=qmHsrNYoe4MC&pg=PA60 p. 60].</ref> In the grammatical tradition of Latin and Greek, because adjectives were [[Inflection|inflected]] for gender, number, and case like nouns (a process called [[declension]]), they were considered a type of noun. The words that are today typically called nouns were then called ''[[substantive]] nouns'' ({{Lang|la|nōmen substantīvum}}).<ref name="McMenomy2">McMenomy, Bruce A. ''Syntactical Mechanics: A New Approach to English, Latin, and Greek''. University of Oklahoma Press, 2014. p. 8.</ref> The terms ''noun substantive'' and ''noun adjective'' were formerly used in English but are now obsolete.<ref name="Trask2">{{Cite book |last=Trask |first=R.L. |author-link=Larry Trask |title=A Dictionary of Grammatical Terms in Linguistics |date=2013 |publisher=Taylor & Francis |isbn=978-1-134-88420-9 |page=188}}</ref>

==Types of use==
{{anchor|Attributive adjective|Predicative adjective|Substantive adjective|Form}}<!--Currently [[Attributive adjective]] and [[Predicative adjective]] redirect here. This anchor template allows them to link directly to the relevant section of this article.-->Depending on the language, an adjective can precede a corresponding noun on a prepositive basis or it can follow a corresponding noun on a postpositive basis. Structural, contextual, and style considerations can impinge on the pre-or post-position of an adjective in a given instance of its occurrence. In English, occurrences of adjectives generally can be classified into one of three categories:

* Within a [[noun phrase]], a ''prepositive adjective'' is antecedent to the head noun, which it modifies attributively.<ref name="Lexico2">See: "Attributive and predicative adjectives" at ''Lexico'', [https://web.archive.org/web/20200515060239/https://www.lexico.com/grammar/attributive-and-predicative-adjectives archived] 15 May 2020.</ref> For example, in "I put my ''happy kids'' into the car", ''happy'' occurs on an antecedent basis within the ''my happy kids'' [[noun phrase]] (''kids'' being its head), and is therefore a prepositive adjective.
* ''[[Postpositive adjective|Postpositive adjectives]]'' occur after the noun or pronoun they modify: within a noun phrase, immediately subsequent to the head noun or pronoun, which it modifies [[Attributive expression|attributively]], e.g. "The only ''room available'' cost twice what we expected"; in an adjacent [[Apposition|appositive]] phrase, e.g. "My ''kid, happy'' as a clam, was already in the back seat"; or linked to the noun or pronoun via a [[Copula (linguistics)|copular]], [[resultative]], depictive or other linking mechanism, as a [[predicative adjective]], e.g. "My ''kids'' are ''happy''", "I wiped the ''table clean''" and "''We'' danced ''naked'' in the rain"<ref name="Lexico2" /> (see [[Subject complement]], [[Object complement]]).
* ''[[Nominalized adjective|Nominalized adjectives]]'', which function as nouns. One way this happens is by [[Elision|eliding]] a noun from an adjective-noun noun phrase, whose remnant thus is a [[nominalization]]. In the sentence, "I read two books to them; he preferred the sad book, but she preferred the happy", ''happy'' is a nominalized adjective, short for "happy one" or "happy book". Another way this happens is in absolute phrases like "out with the old, in with the new", where "the old" means "that which is old" or "all that is old", and similarly with "the new". In such cases, the adjective may function as a [[mass noun]] (as in the preceding example). In English, it may also function as a plural [[count noun]] denoting a collective group, as in "The meek shall inherit the Earth", where "the meek" means "those who are meek" or "all who are meek".

==Distribution==
Adjectives feature as a [[part of speech]] (word class) in most [[language]]s. In some languages, the words that serve the [[semantic]] function of adjectives are categorized together with some other class, such as [[noun]]s or [[verb]]s. In the phrase ''a [[Ford Motor Company|Ford]] car'', ''Ford'' is unquestionably a noun but its function is adjectival ([[noun adjunct]], see [[#Other modifiers of nouns|below]]): to modify ''car''.

In some languages adjectives can function as nouns: for example, the Spanish phrase {{Lang|es|un rojo}} means {{gloss|a red [one]}}. This is also possible in English, see [[#Types of use|above]]. However, such nominalized adjectives mostly refer to people and are more commonly found in the plural: ''Reds'' or ''a Red'' (most commonly in the sense of {{gloss|communist}}), ''the rich and the famous'', ''the oppressed'', ''the poorer'' or ''the poorest'', or (not for people) ''(to venture into) the unknown'', ''the obvious'', etc., though use in the singular such as ''a poor'' (also the plural ''(the) poors'' unlike ''the poor'') or ''a gay'' (less so ''(the) gays'') is widely considered dated and generally avoided.

As for "confusion" with verbs, rather than an adjective meaning "big", a language might have a verb that means "to be big" and could then use an [[attributive verb]] construction analogous to "big-being house" to express what in English is called a "big house". Such an analysis is possible for the [[Chinese grammar|grammar of Standard Chinese]] and [[Korean grammar|Korean]], for example.

Different languages do not use adjectives in exactly the same situations. For example, where English uses ''"''to be ''hungry''" (''hungry'' being an adjective), [[Dutch grammar|Dutch]], [[French grammar|French]], and [[Spanish grammar|Spanish]] use "{{Lang|nl|honger hebben}}", "{{Lang|fr|avoir faim}}", and "{{Lang|es|tener hambre}}" respectively (literally "to have hunger", the words for "hunger" being nouns). Similarly, where Hebrew uses the adjective {{Script/Hebrew|זקוק}} ({{Lang|he-latn|zaqūq}}, roughly "in need of" or "needing"), English uses the verb "to need".

In languages that have adjectives as a word class, it is usually an [[open class (linguistics)|open class]]; that is, it is relatively common for new adjectives to be formed via such processes as [[Morphological derivation|derivation]]. However, [[Bantu languages]] are well known for having only a small closed class of adjectives, and new adjectives are not easily derived. Similarly, native [[Japanese adjectives]] (''i''-adjectives) are considered a closed class (as are native verbs), although nouns (an open class) may be used in the [[genitive]] to convey some adjectival meanings, and there is also the separate open class of [[Adjectival noun (Japanese)|adjectival nouns]] (''na''-adjectives).

==Adverbs==
Many languages (including English) distinguish between adjectives, which qualify nouns and pronouns, and [[adverb]]s, which mainly modify [[verb]]s, adjectives, or other adverbs. Not all languages make this exact distinction; many (including English) have words that can function as either. For example, in English, ''fast'' is an adjective in "a ''fast'' car" (where it qualifies the noun ''car'') but an adverb in "he drove ''fast''" (where it modifies the verb ''drove'').

In [[Dutch grammar|Dutch]] and [[German grammar|German]], adjectives and adverbs are usually identical in form and many grammarians do not make the distinction, but patterns of inflection can suggest a difference:
:{{Lang|de|Eine kluge neue Idee.}}
::A ''clever'' new idea.
:{{Lang|de|Eine klug ausgereifte Idee.}}
::A ''cleverly'' developed idea.
A German word like {{Lang|de|klug}} ("clever(ly)") takes endings when used as an attributive adjective but not when used adverbially. Whether these are distinct parts of speech or distinct usages of the same part of speech is a question of analysis. While German linguistic terminology distinguishes {{Lang|de|adverbiale}} from {{Lang|de|adjektivische Formen}}, German refers to both as {{Lang|de|Eigenschaftswörter}} ("property words").

==Determiners==
{{Main|Determiner}}

Linguists today distinguish determiners from adjectives, considering them to be two separate parts of speech (or ''[[Parts of speech|lexical categories]]''). Determiners formerly were considered to be adjectives in some of their uses.{{efn|In English dictionaries, which typically still do not treat determiners as their own part of speech, determiners are often recognizable by being listed both as adjectives and as pronouns.}} Determiners function neither as nouns nor pronouns but instead characterize a nominal element within a particular context. They generally do this by indicating [[definiteness]] (''a'' vs. ''the''), [[quantity]] (''one'' vs. ''some'' vs. ''many''), or another such property.

==Adjective phrases==
{{Main|Adjective phrase}}

An adjective acts as the head of an ''adjective phrase'' or ''adjectival phrase'' (AP). In the simplest case, an adjective phrase consists solely of the adjective; more complex adjective phrases may contain one or more [[adverb]]s modifying the adjective ("''very'' strong"), or one or more [[complement (linguistics)|complements]] (such as "worth ''several dollars''", "full ''of toys''", or "eager ''to please''"). In English, attributive adjective phrases that include complements typically follow the noun that they qualify ("an evildoer ''devoid of redeeming qualities''").

==Other modifiers of nouns==
In many languages (including English) it is possible for nouns to modify other nouns. Unlike adjectives, nouns acting as modifiers (called ''attributive nouns'' or ''[[noun adjunct]]s'') usually are not predicative; a beautiful park is beautiful, but a car park is not "car". The modifier often indicates origin ("''Virginia'' reel"), purpose ("''work'' clothes"), semantic [[Patient (grammar)|patient]] ("''man'' eater") or semantic [[Subject (grammar)|subject]] ("''child'' actor"); however, it may generally indicate almost any semantic relationship. It is also common for adjectives to be [[Morphological derivation|derived]] from nouns, as in ''boyish'', ''birdlike'', ''behavioral (behavioural)'', ''famous'', ''manly'', ''angelic'', and so on.

In [[Australian Aboriginal languages]], the distinction between adjectives and nouns is typically thought weak, and many of the languages only use nouns, or nouns with a limited set of adjective-deriving [[affix]]es, to modify other nouns. In languages that have a subtle adjective-noun distinction, one way to tell them apart is that a modifying adjective can come to stand in for an entire [[Elision|elided]] noun phrase, while a modifying noun cannot. For example, in [[Bardi language|Bardi]], the adjective ''moorrooloo'' {{gloss|little}} in the phrase ''moorrooloo'' ''baawa'' {{gloss|little child}} can stand on its own to mean {{gloss|the little one}}, while the attributive noun ''aamba'' {{gloss|man}} in the phrase ''aamba baawa'' {{gloss|male child}} cannot stand for the whole phrase to mean {{gloss|the male one}}.<ref name=":0">{{Cite book|last=Bowern|first=Claire|title=A grammar of Bardi|date=2013|publisher=De Gruyter Mouton|isbn=978-3-11-027818-7|location=Berlin|oclc=848086054}}</ref> In other languages, like [[Warlpiri language|Warlpiri]], nouns and adjectives are lumped together beneath the [[Nominal (linguistics)|nominal]] umbrella because of their shared syntactic distribution as [[Argument (linguistics)|arguments]] of [[Predicate (grammar)|predicates]]. The only thing distinguishing them is that some nominals seem to semantically denote entities (typically nouns in English) and some nominals seem to denote attributes (typically adjectives in English).<ref>{{Cite book |last=Simpson |first=Jane |title=Warlpiri Morpho-Syntax : a Lexicalist Approach |date=6 December 2012 |publisher=Springer Netherlands |isbn=978-94-011-3204-6 |location=Dordrecht |oclc=851384391}}</ref>

Many languages have [[participle]] forms that can act as noun modifiers either alone or as the head of a phrase. Sometimes participles develop into functional usage as adjectives. Examples in English include ''relieved'' (the past participle of ''relieve''), used as an adjective in [[passive voice]] constructs such as "I am so ''relieved'' to see you". Other examples include ''spoken'' (the past participle of ''speak'') and ''going'' (the present participle of ''go''), which function as attribute adjectives in such phrases as "the ''spoken'' word" and "the ''going'' rate".

Other constructs that often modify nouns include [[preposition]]al phrases (as in "a rebel ''without a cause''"), [[relative clause]]s (as in "the man ''who wasn't there''"), and [[infinitive]] phrases (as in "a cake ''to die for''"). Some nouns can also take complements such as [[content clause]]s (as in "the idea ''that I would do that''"), but these are not commonly considered [[Grammatical modifier|modifiers]]. For more information about possible modifiers and dependents of nouns, see [[Noun phrase#Components of noun phrases|Components of noun phrases]].

==Order==
In many languages, attributive adjectives usually occur in a specific order. In general, the adjective order in English can be summarised as: opinion, size, age or shape, colour, origin, material, purpose.<ref name="BritishCouncilOrder">[https://learnenglish.britishcouncil.org/en/english-grammar/order-adjectives Order of adjectives], British Council.</ref><ref>R.M.W. Dixon, "Where Have all the Adjectives Gone?" ''[[Studies in Language]]'' 1, no. 1 (1977): 19–80.</ref><ref>{{cite web|url=https://www.theguardian.com/commentisfree/2016/sep/13/sentence-order-adjectives-rule-elements-of-eloquence-dictionary|title=Order force: the old grammar rule we all obey without realising|first=Tim|last=Dowling|date=13 September 2016|work=The Guardian}}</ref> Other language authorities, like the ''[[Cambridge Advanced Learner's Dictionary|Cambridge Dictionary]]'', state that shape precedes rather than follows age.<ref name="BritishCouncilOrder"/><ref>[https://dictionary.cambridge.org/grammar/british-grammar/about-adjectives-and-adverbs/adjectives-order Adjectives: order (from English Grammar Today)], in the ''[[Cambridge Advanced Learner's Dictionary]]'' online</ref><ref>R. Declerck, ''[https://books.google.com/books?id=cV4dAQAAIAAJ A Comprehensive Descriptive Grammar of English]'' (1991), p. 350: "When there are several descriptive adjectives, they normally occur in the following order: characteristic – size – shape – age – colour – [...]"</ref>

Determiners and postdeterminers—articles, numerals, and other limiters (e.g. ''three'' blind mice)—come before attributive adjectives in English. Although [[English determiners#combinations of determiners|certain combinations of determiners]] can appear before a noun, they are far more circumscribed than adjectives in their use—typically, only a single determiner would appear before a noun or noun phrase (including any attributive adjectives).

# Opinion – limiter adjectives (e.g. a ''real'' hero, a ''perfect'' idiot) and adjectives of subjective measure (e.g. ''beautiful'', ''supportive'') or value (e.g. ''good'', ''bad'', ''costly'')
# Size – adjectives denoting physical size (e.g. ''tiny'', ''big'', ''extensive'')
# Age – adjectives denoting age (e.g. ''young'', ''old'', ''new'', ''ancient'', ''six-year-old'')
# Shape or physical quality – adjectives describing more detailed physical attributes than overall size (e.g. ''round'', ''sharp'', ''turgid'', ''thin'')
# Colour – adjectives denoting colour or pattern (e.g. ''white'', ''black'', ''pale'', ''splotchy'')
# Origin – denominal adjectives denoting source (e.g. ''Japanese'', ''volcanic'', ''extraterrestrial'')
# Material – denominal adjectives denoting what something is made of (e.g., ''plastic'', ''metallic'', ''wooden'')
# Qualifier/purpose – final limiter, which sometimes forms part of the (compound) noun (e.g., ''high'' chair, ''northern'' cabin, ''passenger'' car, ''book'' cover)

This means that, in English, adjectives pertaining to size precede adjectives pertaining to age ("little old", not "old little"), which in turn generally precede adjectives pertaining to colour ("old white", not "white old"). So, one would say "One (quantity) nice (opinion) little (size) old (age) round (shape) [''or'' round old] white (colour) brick (material) house." When several adjectives of the same type are used together, they are ordered from general to specific, like "lovely intelligent person" or "old medieval castle".<ref name="BritishCouncilOrder" />

This order may be more rigid in some languages than others; in some, like Spanish, it may only be a default (''[[markedness|unmarked]]'') word order, with other orders being permissible. Other languages, such as [[Tagalog language|Tagalog]], follow their adjectival orders [[Tagalog grammar#Sequence of modifiers in a noun phrase|as rigidly as]] English.

The normal adjectival order of English may be overridden in certain circumstances, especially when one adjective is being [[:wikt:front#English-move to sentence start|fronted]] or with [[ablaut reduplication]]. For example, the usual order of adjectives in English would result in the phrase "the bad big wolf" (opinion before size), but instead, the usual phrase is "the big bad wolf".

Owing partially to borrowings from French, English has some adjectives that follow the noun as [[postmodifier]]s, called [[postpositive adjective]]s, as in ''time immemorial'' and ''[[attorney general]]''. Adjectives may even change meaning depending on whether they precede or follow, as in ''proper'': "They live in a ''proper town''" (a real town, not a village) vs. "They live in the ''town proper'' (in the town itself, not in the suburbs). All adjectives can follow objects or subjects in elliptical constructions, such as "tell me ''something'' [that is] ''new''" or "We ate the ''pizza'' [that was] ''cold''."

==Comparison (degrees)==
{{Main|Comparison (grammar)|Comparative}}

In many languages, some adjectives are ''comparable'' and the measure of comparison is called ''degree''. For example, a person may be "polite", but another person may be "''more'' polite", and a third person may be the "''most'' polite" of the three. The word "more" here modifies the adjective "polite" to indicate a comparison is being made, and "most" modifies the adjective to indicate an absolute comparison (a ''superlative'').

Among languages that allow adjectives to be compared, different means are used to indicate comparison. Some languages do not distinguish between [[comparative]] and [[superlative]] forms. Other languages allow adjectives to be compared but do not have a special comparative form of the adjective. In such cases, as in some [[Australian Aboriginal languages]], case-marking, such as the [[ablative case]], may be used to indicate one entity has more of an adjectival quality than (i.e. ''from''—hence ABL) another.<ref name=":0" />

In English, many adjectives can be inflected to [[comparative]] and [[superlative]] forms by taking the suffixes "-er" and "-est" (sometimes requiring additional letters before the suffix; see forms for ''far'' below), respectively:

:    "great", "greater", "greatest"
: "deep", "deeper", "deepest"

Some adjectives are ''irregular'' in this sense:
:    "good", "better", "best"
:    "bad", "worse", "worst"
:    "many", "more", "most" (sometimes regarded as an [[adverb]] or [[determiner]])
:    "little", "less", "least"

Some adjectives can have both ''regular'' and ''irregular'' variations:
:    "old", "older", "oldest"
:    "far", "farther", "farthest"

also
:    "old", "elder", "eldest"
:    "far", "further", "furthest"

Another way to convey comparison is by incorporating the words "more" and "most". There is no simple rule to decide which means is correct for any given adjective, however. The general tendency is for simpler adjectives and those from [[Anglo-Saxon language|Anglo-Saxon]] to take the suffixes, while longer adjectives and those from [[French language|French]], [[Latin]], or [[Greek language|Greek]] do not—but sometimes the ''sound'' of the word is the deciding factor.

Many adjectives do not naturally lend themselves to comparison. For example, some English speakers would argue that it does not make sense to say that one thing is "more ultimate" than another, or that something is "most ultimate", since the word "ultimate" is already absolute in its semantics. Such adjectives are called ''non-comparable'' or ''absolute''. Nevertheless, native speakers will frequently play with the raised forms of adjectives of this sort. Although "pregnant" is logically non-comparable (either one is pregnant or not), one may hear a sentence like "She looks more and more pregnant each day".

Comparative and superlative forms are also occasionally used for other purposes than comparison. In English comparatives can be used to suggest that a statement is only tentative or tendential: one might say "John is more the shy-and-retiring type", where the comparative "more" is not really comparing him with other people or with other impressions of him, but rather, could be substituting for "on the whole" or "more so than not". In Italian, superlatives are frequently used to put strong emphasis on an adjective: {{Lang|it|bellissimo}} means "most beautiful", but is in fact more commonly heard in the sense "extremely beautiful".

==Restrictiveness==
{{Main|Restrictiveness}}

Attributive adjectives and other noun [[Grammatical modifier|modifiers]] may be used either ''restrictively'' (helping to identify the noun's referent, hence "restricting" its reference) or ''non-restrictively'' (helping to describe a noun). For example:

:"He was a lazy sort, who would avoid a ''difficult task'' and fill his working hours with easy ones."
Here "difficult" is restrictive – it tells which tasks he avoids, distinguishing these from the easy ones: "Only those tasks that are difficult".
:"She had the job of sorting out the mess left by her predecessor, and she performed this ''difficult task'' with great acumen."
Here ''difficult'' is non-restrictive – it is already known which task it was, but the adjective describes it more fully: "The aforementioned task, which (by the way) is difficult."

In some languages, such as [[Spanish language|Spanish]], restrictiveness is consistently marked; for example, in Spanish {{Lang|es|la tarea difícil}} means "the difficult task" in the sense of "the task that is difficult" (restrictive), whereas {{Lang|es|la difícil tarea}} means "the difficult task" in the sense of "the task, which is difficult" (non-restrictive). In English, restrictiveness is not marked on adjectives but is marked on [[relative clause]]s (the difference between "the man ''who recognized me'' was there" and "the man, ''who recognized me'', was there" being one of restrictiveness).

==Agreement==
{{main|Agreement (linguistics)}}

In some languages, adjectives alter their form to reflect the gender, case and number of the noun that they describe. This is called [[Agreement (linguistics)|agreement]] or concord. Usually it takes the form of inflections at the end of the word, as in [[Latin]]:

:{|border=0
|''puella bon''a ||rowspan=4 style="width:30px"| || (good girl, feminine singular nominative)
|-
|''puellam bon''am || (good girl, feminine singular accusative/object case)
|-
|''puer bon''us || (good boy, masculine singular nominative)
|-
|''pueri bon''i || (good boys, masculine plural nominative)
|}

In [[Celtic languages]], however, initial consonant [[lenition]] marks the adjective with a feminine singular noun, as in [[Irish language|Irish]]:

:{|border=0
|''buachaill'' m''aith'' ||rowspan=4 style="width:30px"| || (good boy, masculine)
|-
|''girseach'' mh''aith'' || (good girl, feminine)
|}

Here, a distinction may be made between attributive and predicative usage. In English, adjectives never agree, whereas in French, they always agree. In German, they agree only when they are used attributively, and in Hungarian, they agree only when they are used predicatively:

:{|border=0
|''The good'' (Ø) ''boys''. ||rowspan=4 style="width:30px"| || ''The boys are good'' (Ø).
|-
|''Les bon''s ''garçons''. || ''Les garçons sont bon''s.
|-
|''Die brav''en ''Jungen''. || ''Die Jungen sind brav'' (Ø).
|-
|''A jó'' (Ø) ''fiúk.'' || ''A fiúk jó''k.
|}

==Semantics==
{{Expand section|with=other aspects of adjective semantics|talk=Problems with Semantics Section|date=August 2022}}

Semanticist [[Barbara Partee]] classifies adjectives semantically as [[Intersective modifier|intersective]], [[Subsective modifier|subsective]], or nonsubsective, with nonsubsective adjectives being plain nonsubsective or [[Privative adjective|privative]].<ref>{{Cite book |last=Partee |first=Barbara |url=https://direct.mit.edu/books/book/4671/An-Invitation-to-Cognitive-ScienceLanguage |title=An Invitation to Cognitive Science: Language |publisher=The MIT Press |year=1995 |isbn=978-0-262-15044-6 |editor-last=Gleitman |editor-first=Lila |language=en |chapter=Lexical semantics and compositionality |doi=10.7551/mitpress/3964.003.0015 |author-link=Barbara Partee |editor2-last=Liberman |editor2-first=Mark |editor3-last=Osherson |editor3-first=Daniel N.}}</ref>

* An adjective is intersective if and only if the [[Extension (semantics)|extension]] of its combination with a noun is equal to the [[intersection]] of its extension and that of the noun its modifying. For example, the adjective ''carnivorous'' is intersective, given the extension of ''carnivorous mammal'' is the intersection of the extensions of ''carnivorous'' and ''mammal'' (i.e., the set of all mammals who are carnivorous).
* An adjective is subsective if and only if the extension of its combination with a noun is a subset of the extension of the noun. For example, the extension of ''skillful surgeon'' is a subset of the extension of ''surgeon'', but it is not the intersection of that and the extension of ''skillful'', as that would include (for example) incompetent surgeons who are skilled violinists. All intersective adjectives are subsective, but the term 'subsective' is sometimes used to refer to only those subsective adjectives which are not intersective.
* An adjective is privative if and only if the extension of its combination with a noun is [[Disjoint sets|disjoint]] from the extension of the noun. For example, ''fake'' is privative because a <u>fake</u> cat is not a cat.
* A plain nonsubsective adjective is an adjective that is not subsective or privative. For example, the word ''possible'' is this kind of adjective, as the extension of ''possible murderer'' overlaps with, but is not included in the extension of ''murderer'' (as some, but not all, possible murderers are murderers).

==See also==
* [[Flat adverb]]
* [[List of eponymous adjectives in English]]
* [[Predication (philosophy)]]
* [[Proper adjective]]

==Explanatory notes==
{{notelist}}

==References==
{{Reflist}}

==Further reading==
* {{Cite journal | author = Dixon, R. M. W. | year = 1977 | title = Where Have All the Adjectives Gone? | journal = Studies in Language | volume = 1 | pages = 19–80 | doi = 10.1075/sl.1.1.04dix }}
* {{cite book |last=Dixon |first=R. M. W. |editor=R. E. Asher |title=The Encyclopedia of Language and Linguistics |publisher=Pergamon Press Inc |edition=1st |year=1993 |pages=29–35 |isbn= 0-08-035943-4}}
* Dixon, R. M. W. (1999). "Adjectives". In K. Brown & T. Miller (eds.), ''Concise Encyclopedia of Grammatical Categories''. Amsterdam: Elsevier. {{ISBN|0-08-043164-X}}. pp.&nbsp;1–8.
* {{cite book |last=Rießler |first=Michael |year=2016 |title= Adjective Attribution | url=https://langsci-press.org/catalog/book/19 |publisher=[[Language Science Press]] |isbn=9783944675657}}
* Warren, Beatrice (1984). ''Classifying adjectives''. Gothenburg studies in English No. 56. Göteborg: Acta Universitatis Gothoburgensis. {{ISBN|91-7346-133-4}}.
* {{Cite journal | author = Wierzbicka, Anna | year = 1986 | title = What's in a Noun? (Or: How Do Nouns Differ in Meaning from Adjectives?) | journal = Studies in Language | volume = 10 | issue = 2| pages = 353–389 | doi = 10.1075/sl.10.2.05wie }}

==External links==
{{Wiktionary|adjective}}
{{Wiktionary|predicative adjective}}
* [[wikt:Appendix:English collateral adjectives|List of English collateral adjectives]] at [[Wiktionary]]

{{lexical categories|state=collapsed}}

{{Authority control}}

[[Category:Adjectives| ]]
{{Language adjectives}}