役立(やくだ)つ

やくだつ
verb (godan)
to be useful, to be helpful
1. to be useful, to be helpful, to serve a purpose
To be of practical use or benefit to someone or something.
この本(ほん)は勉強(べんきょう)に役立(やくだ)つ。
This book is useful for studying.
将来(しょうらい)役立(やくだ)つスキルを身(み)につけたい。
I want to acquire skills that will be useful in the future.
あなたの助言(じょげん)が役立(やくだ)ちました。
Your advice was helpful.

TRANSITIVITY: 自動詞(じどうし) (intransitive).

COMPOUND: 役(やく) (role, use) + 立(た)つ (to stand)

CONJUGATION (godan): 役立(やくだ)つ → 役立(やくだ)たない → 役立(やくだ)った → 役立(やくだ)って

COMMON PATTERNS:

  • 〜に役立(やくだ)つ (be useful for ~)
  • 〜の役(やく)に立(た)つ (be useful for ~) - similar expression

RELATED:

  • 役立(やくだ)てる (to put to use - transitive)
  • 役(やく)に立(た)つ (to be useful - common expression)
  • 有益(ゆうえき) (beneficial, useful)
  • 便利(べんり) (convenient, useful)

Related Words

Related: 便利(べんり)
general
Added 2026.1.11 21:47 · Revised 2026.1.19 21:17
03000/03168_yakudatsu