自己同一性(じこどういつせい)

じこどういつせい
noun
self-identity; ego identity
formalcognitionabstract
1. self-identity; ego identity
The sense of who one is as a continuous, unified person — a psychological term for one's awareness of being oneself. Often associated with Erik Erikson's theory of identity formation.
自己同一性(じこどういつせい)の確立(かくりつ)。
The establishment of self-identity.
青年期(せいねんき)は自己同一性(じこどういつせい)を形成(けいせい)する時期(じき)だ。
Adolescence is the period when self-identity is formed.
長年(ながねん)海外(かいがい)で暮(く)らした彼(かれ)は、自己同一性(じこどういつせい)に悩(なや)むことがあった。
Having lived abroad for many years, he sometimes struggled with his sense of self-identity.

Composed of 自己(じこ) (self), 同一(どういつ) (sameness, identity), and the suffix 性(せい) (-ness, -ity). A technical term from developmental psychology, especially associated with Erik Erikson's theory, in which forming a stable 自己同一性(じこどういつせい) is the central task of adolescence. In everyday Japanese, the loanword アイデンティティ is more common.

Common collocations

Similar words

  • アイデンティティ: identity — the everyday loanword, far more common in casual speech and writing
  • 自我(じが): the ego, the self — a more general philosophical/psychological term
  • 自己意識(じこいしき): self-consciousness, self-awareness — emphasizes the awareness itself rather than a continuous identity

Related Words

Compare: アイデンティティ (identity)
Compare: 自我(じが) (the ego, the self)
general
Added 2026.4.11 21:54 · Revised 2026.9.2 13:02
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