identity

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identity

  • /aɪˈdɛntɪti/ UK
  • /aɪˈdɛn(t)ɪti/ US
  • /aɪˈdɛn(t)əti/ US
  • [aɪˈdɛnɪɾi] US
  • [aɪˈdɛnəɾi] US
  • /ɑɪˈdentəti/ Australia

Where it comes from

From Middle English ydemptite, from Middle French identité and its etymon Late Latin idemptitās, identitās, from idem (“the same”) + -tās (suffix forming abstract nouns) as a calque of Ancient Greek ταὐτότης (tautótēs, “sameness”).

noun identities

  1. countable, uncountable, in technical usage Sameness, identicalness; the quality or fact of (several specified things) being the same. Benjamin Franklin established the identity of electricity and lightning.

    Similar: identicalness, identicality, sameness, identity, sameliness, uniformity · Opposite: unidenticality, nonidentity, difference, differentiation, differentness, distinction, distinguishedness, diversity

  2. countable, uncountable The difference or character that marks off an individual or collective from the rest of the same kind; selfhood; the sense of who something or someone or oneself is, or the recurring characteristics that enable the recognition of such an individual or group by others or themselves. I've been through so many changes, I have no sense of identity.

    Similar: individuality, beinghood, identity, ipseity, personality, personhood, personness, selfdom, selfhood, selfness, selfship

  3. countable, uncountable A name or persona—a mask or appearance one presents to the world—by which one is known. This criminal has taken on several identities.
  4. countable, uncountable An equation which always holds true regardless of the choice of input variables. The equation (x+y)(x−y) = x²−y² is an algebraic identity. It is true regardless of the values of x and y.
  5. countable, uncountable Any function which maps all elements of its domain to themselves.

    Similar: identity function

  6. countable, uncountable An element of an algebraic structure which, when applied to another element under an operation in that structure, yields this second element. Zero is the identity for the addition of real numbers.
  7. Australia, New Zealand, countable, uncountable A well-known or famous person. The body of a well known old identity named James Conroy […] was found in the water yesterday afternoon…

    Similar: celebrity, personality

Thesaurus

Closest in meaning: identicalness, individuality, identity element, indistinguishability, identity operator, identical, similarity, resemblance, oneness, characteristic, entity, identification, identifier, name, identify, personality

Translations

Every language

noun the sameness some individuals share to make up the same kind or universal

Españolidentidad
한국어동일(同一)함 dong'ilham, 동일성 dong'ilseong
日本語同一 dōitsu, 同一性 dōitsusei
中文個性 /个性 gèxìng, 身分 shēnfen, 身份 shēnfen
Portuguêsidentidade
Françaisidentité
DeutschIdentität, Gleichheit, Übereinstimmung, Nämlichkeit
Italianoidentità
Ελληνικάταυτότητα taftótita
Românăidentitate
Русскийтожде́ственность toždéstvennostʹ, иденти́чность idɛntíčnostʹ
Tiếng Việttính đồng nhất
العربيةمُطَابَقَة muṭābaqa
עבריתזֶהוּת zehút

noun the difference or character that marks off an individual or group from the rest

Españolidentidad
한국어아이덴티티 aidentiti, 정체성 jeongcheseong
日本語身元 mimoto, 同一性 dōitsusei, アイデンティティ aidentiti, アイデンティティー aitentitī, 主体性 shutaisei
中文同一性 tóngyīxìng, 個性 /个性 gèxìng, 特性 tèxìng, 身分 shēnfen, 身份 shēnfèn
Portuguêsidentidade
Françaisidentité
DeutschIdentität
Ελληνικάταυτότητα taftótita
Русскийиденти́чность idɛntíčnostʹ, индивидуа́льность individuálʹnostʹ, ли́чность líčnostʹ
Tiếng Việtcá tính, đặc tính
العربيةهُوِيَّة huwiyya
עבריתזֶהוּת zehút

noun name or persona

한국어정체 jeongche
日本語氏名 shimei, 素性 sujō
中文身分 shēnfen, 身份 shēnfen
Portuguêsidentidade
Françaisidentité
DeutschIdentität
Ελληνικάταυτότητα taftótita
Românăidentitate
Русскийли́чность líčnostʹ, ли́чные да́нные líčnyje dánnyje
العربيةهُوِيَّة huwiyya
עבריתפַּרְצוּף partsúf

noun a mathematical equation that holds true irrespective of input elements.

Españolidentidad

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Cite this
MLA

"identity." Wiktionary, via Micwyn, micwyn.com/word/identity. Accessed 6 Nov. 2026.

APA

identity. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/identity

Chicago

"identity." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/identity.

BibTeX
@misc{identity_2026,
  title = {identity},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/identity},
  urldate = {2026-11-06}
}