identity

/aɪˈdɛn(t)ɪti/
noun

Sameness, identicalness; the quality or fact of (several specified things) being the same.

NWL Collins ENABLE

Noun 4 meanings

  1. Sameness, identicalness; the quality or fact of (several specified things) being the same.

    “Benjamin Franklin established the identity of electricity and lightning.”

  2. 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.”

  3. 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. 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.”

Definitions: Wiktionary (CC BY-SA) via Kaikki/Wiktextract

Where it comes from

Etymology

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”).

Similar and opposite words

Similar
identicalnessidenticalitysamenesssamelinessuniformityindividualitybeinghoodipseity
Opposite
unidenticalitynonidentitydifferencedifferentiationdifferentnessdistinction

IDENTITY at a glance

IDENTITY has 8 letters and scores 12 points in Scrabble (I 1 + D 2 + E 1 + N 1 + T 1 + I 1 + T 1 + Y 4) and 12 in Words With Friends, before board bonuses. It ranks #2,200 by how often it appears in everyday English. It is valid in ENABLE, NWL2023, Collins/SOWPODS.

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