故意(こい)

こい
noun
intent; deliberateness; on purpose
formallegaldescriptive
1. intent; deliberateness; willfulness
The state of doing something knowingly and purposefully, especially in legal or formal contexts. Contrasted with negligence or accident.
故意(こい)に壊(こわ)したわけではない。
I didn't break it on purpose.
故意(こい)による犯行(はんこう)か過失(かしつ)かが争点(そうてん)になっている。
Whether the offense was intentional or negligent is the point of contention.
故意(こい)にボールを相手(あいて)にぶつけた選手(せんしゅ)が退場(たいじょう)になった。
The player who deliberately hit the opponent with the ball was ejected.

Usage

Primarily used in legal, formal, and news contexts. Used adverbially as 故意(こい)に (intentionally, on purpose). In everyday speech, わざと is more common.

Common collocations

Similar words

Related Words

Synonym: 意図的(いとてき) (intentional (formal))
Synonym: わざと (on purpose (casual))
Compare: 重過失(じゅうかしつ) (gross negligence)
general
Added 2026.3.14 22:05 · Revised 2026.9.2 13:01
16500/16844_koi