アイデンティティの定義と意味 - メリアム・ウェブスター

IDENTITY Definition & Meaning - Merriam-Webster Est. 1828 Dictionary Definition Definition Synonyms Example Sentences Word History Phrases Containing Rhymes Entries Near Related Articles Cite this Entry Citation Kids Definition Kids Medical Definition Medical Legal Definition Legal More from M-W Show more Show more Citation Kids Medical Legal More from M-W Save Word To save this word, you'll need to log in. Log In identity noun iden·​ti·​ty ī-ˈden-tə-tē ə- , -ˈde-nə- plural identities Synonyms of identity Simple Definition A Simple Definition is available from our Learner's Dictionary to help you understand the meaning faster. 1 a (1) : the distinguishing character or personality of an individual : individuality a strong sense of identity As children grow, they establish their own identities . (2) : who someone is : the name of a person The suspect's identity is not known. a case of mistaken identity You will need to show proof of identity . The face of the witness was hidden in order to protect her identity . b : the relation established by psychological identification His art reflects his cultural identity . 2 : the condition of being the same with something described or asserted establish the identity of stolen goods 3 a : sameness of essential or generic character in different instances the identity of the red in the rug with the red of a brick b : sameness in all that constitutes the objective reality of a thing : oneness the sense of identity arising in a shared experience 4 : an operator that leaves unchanged an element on which it operates : identity element since if zero is added to any integer, the sum is the same integer, zero is an additive identity Synonyms of identity Relevance similarity identicalness resemblance sameness oneness homogeneity See All Synonyms & Antonyms in Thesaurus Examples of identity in a Sentence The identity of the criminal is not known. They produced their passports as proof of their identities . They arrested the wrong man. It was a case of mistaken identity . As children grow, they establish their own identities . people who seem to lack individual identity His art reflects his cultural identity . See More Recent Examples on the Web Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback . Police said the victim, whose identity was not released, was on vacation with two family members from the Unterallgäu region of Germany. — Bonny Chu, FOXNews.com , 29 Apr. 2026 While trauma is its focus, at heart the book wrestles with the concept of parent-less identity and the question of deserving to be loved. — Literary Hub , 28 Apr. 2026 The Brown Ballers are the first true Dream Team of Indian basketball – 12 players who risk their careers, reputations, and identities to rewrite the rules of who belongs in the game. — Peter White, Deadline , 28 Apr. 2026 And now the vice president will relaunch his public identity June 16, with a book about his personal faith. — Ben Smith, semafor.com , 28 Apr. 2026 See All Example Sentences for identity Word History Etymology Middle French identité , from Late Latin identitat-, identitas , probably from Latin identidem repeatedly, contraction of idem et idem , literally, same and same First Known Use 1545, in the meaning defined at sense 3a Time Traveler The first known use of identity was in 1545 See more words from the same year Phrases Containing identity a case of mistaken identity additive identity case of mistaken identity dissociative identity disorder gender identity gender identity disorder identity card identity crisis identity element identity matrix identity parade identity politics identity theft multiplicative identity self - identity Rhymes for identity nonentity entity See All Rhymes for identity Browse Nearby Words identism identity identity card See all Nearby Words Articles Related to identity Words We're Watching: Intersectionality What happens when forms of discrimination combine, overlap, and intersect Cite this Entry Style MLA Chicago APA Merriam-Webster “Identity.” Merriam-Webster.com Dictionary , Merriam-Webster, https://www.merriam-webster.com/dictionary/identity. Accessed 4 May. 2026. Copy Citation Kids Definition identity noun iden·​ti·​ty ī-ˈden(t)-ət-ē ə-ˈden(t)- plural identities 1 : the condition of being exactly alike : sameness 2 : individuality sense 1 3 : the fact of being the same person or thing as claimed prove one's identity 4 : identity element Medical Definition identity noun iden·​ti·​ty ī-ˈden(t)-ət-ē, ə-ˈ plural identities 1 : the distinguishing character or personality of an individual 2 : the relation established by psychological identification Legal Definition identity noun iden·​ti·​ty plural identities 1 : sameness of essential character or aspect collateral estoppel requires identity of the issues and the parties 2 a : separate or distinct existence when movables lose their identity or become an integral part of the immovable — Louisiana Civil Code b : distinguishing character of a person especially : information (as a name or address) that distinguishes a person is required to reveal the identity of an informer but for a mistake concerning the proper party's identity — Federal Rules of Civil Procedure Rule 15(c) 3 : the condition of being the same as a thing or person described, claimed, or accused character evidence of a suspect's past crimes may be admitted to prove the identity of a crime's perpetrator More from Merriam-Webster on identity Nglish: Translation of identity for Spanish Speakers Last Updated: 29 Apr 2026 - Updated example sentences Love words? Need even more definitions? Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! Merriam-Webster unabridged More from Merriam-Webster Word of the Day scrupulous See Definitions and Examples » Get Word of the Day daily email! Popular in Grammar & Usage See More More Commonly Mispronounced Words 5 Verbal Slip Ups and Language Mistakes Is that lie 'bald-faced' or 'bold-faced'? The Difference Between 'i.e.' and 'e.g.' Why is '-ed' sometimes pronounced at the end of a word? See More Popular in Wordplay See More The Longest Long Words List 9 Other Words for Beautiful The Words of the Week - May 1 Was 'nervous Nellie' a Real Person? 12 Lovely and Unusual Words for the Natural World See More Popular See More More Commonly Mispronounced Words The Longest Long Words List 9 Other Words for Beautiful See More Games & Quizzes See All Quordle Can you solve 4 words at once? Play Blossom Pick the best words! Play The Missing Letter A daily crossword with a twist Play Name That Tree! A quiz that’s all bark, no bite. Take the quiz See All