Word
Kana: おさない Romaji: osanai Level: N3

幼い

Meaning in English

very young, childish, immature

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Dictionary

Word context

What it means

幼い means young in age, typically describing a child who has not yet reached maturity; it also conveys innocence or naivety in a gentle, sometimes evaluative sense, depending on context.

Main meanings

  • Primary sense: the state of being in the early developmental stage, typically referring to children.
  • Nuance: implies innocence or naivety; tone may be affectionate or slightly condescending depending on context.
  • Usage extension: can describe behaviors or appearances that resemble youth or lack of experience.

How to use it

Used in neutral or descriptive narration, academic and literary prose, and everyday speech; appropriate when referring to a child or childlike behavior. In formal writing, it is common to pair with 子 or 児 to emphasize age, while in casual speech it can carry warmth or critique depending on tone; typical phrases include 幼い頃 and 幼い性格.

Variants and close terms

  • 若い (wakai) — young
  • 子供っぽい (kodomoppoi) — childish
  • 未熟 (mijuku) — immature

Composition

  • 幼: young, infant; the core meaning related to early life
  • い: adjective suffix that turns the concept into an i-adjective describing a state or quality

Etymology

Phonetic evolution: the term combines the kanji 幼 with the adjective suffix い; over historical usage the reading and meaning settled into the modern sense of youth and childishness.

Word class

adjective (i-adjective)

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