故意(こい)に

こいに
adverb
intentionally; deliberately; on purpose
1. intentionally; deliberately; on purpose
Performing an action with full awareness and intent, as opposed to doing it by accident or mistake.
��意(こい)にやったのではない。
I didn't do it on purpose.
彼(かれ)は故意(こ��)に情報(じょうほう)を隠(かく)していた。
He was deliberately hiding information.
故意(こい)に規則(きそく)に違反(いはん)した場合(ばあい)は、厳(きび)しい処分(しょぶん)が科(か)せられる。
If you deliberately violate the rules, severe penalties will be imposed.

A formal adverb used to express that an action was done on purpose. 故意(こい) is a noun meaning "intent, deliberateness" and に makes it adverbial. It is particularly common in legal, news, and formal written contexts.

COMMON COLLOCATIONS:

  • 故意(こい)に壊(こわ)す — to break intentionally
  • 故意(こい)に無視(むし)する — to deliberately ignore
  • 故意(こい)に隠(かく)す — to intentionally conceal
  • 故意(こい)に遅(おく)らせる — to delay on purpose

SIMILAR WORDS:

  • わざと — on purpose, deliberately (more colloquial; used in everyday speech)
  • 意図的(いとてき)に — intentionally (similar formality; focuses on the planned nature)
  • 意識的(いしきてき)に — consciously, intentionally (emphasizes awareness)

USAGE:
故意(こい)に is more formal and written than わざと. In legal contexts, 故意(こい) (as a noun) contrasts with 過失(かしつ) (negligence): 故意(こい)による犯罪(はんざい) (intentional crime) vs. 過失(かしつ)による犯罪(はんざい) (crime by negligence).

general
Added 2026.4.29 21:35
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