Where does “アイデンティティ” come from?

アイデンティティ (Japanese) comes from English identity, from Middle English ydemptite.

アイデンティティ (Japanese): identity

Definitions

  1. identity

Ancestry of “アイデンティティ”, step by step

StepLanguageWordMeaning
1EnglishidentitySameness, identicalness; the quality or fact of (several specified things) being the same
2Middle Englishydemptite—
Every word from Middle English ydemptite →Every word from English identity →
アイデンティティ — Etymology, Origin & Word History | Etymology Explorer