違 法(いほう)

いほう

noun, na-adjective

illegal; unlawful

formallaw

1. illegal; unlawful; against the law

Not permitted by law; in violation of legal rules or regulations.

違法(いほう)駐車(ちゅうしゃ)はやめてください。

Please do not park illegally.

これは違法(いほう)な行為(こうい)だ。

This is an illegal act.

違法(いほう)改造(かいぞう)した車(くるま)で捕(つか)まった。

He was caught with an illegally modified car.

違法(いほう) indicates something that violates the law. It functions as both a noun and a na-adjective: 違法(いほう)な行為(こうい) (an illegal act), 違法(いほう)だ (it is illegal).

Common collocations

違法(いほう)駐車(ちゅうしゃ): illegal parking
違法(いほう)行為(こうい): illegal act
違法(いほう)改造(かいぞう): illegal modification
違法(いほう)コピー: illegal copy, piracy
違法(いほう)薬物(やくぶつ): illegal drugs
違法(いほう)に: illegally (adverbial)

Similar words

合法(ごうほう): legal, lawful (direct opposite)
不法(ふほう): unlawful, illegal (similar meaning, often used in 不法(ふほう)侵入(しんにゅう) "trespassing")

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Formal. Common in legal, news, and official contexts.

Related Words

Antonym: 合法(ごうほう) (legal, lawful)

Compare: 不法(ふほう) (unlawful, illegal)

Related: 反則(はんそく) (foul, violation, infringement)

Antonym: 適法(てきほう) (lawful)

Compare: 無法(むほう) (lawless)

Related: 無認可(むにんか) (unlicensed)

general

Added 2026.2.3 14:02 · Revised 2026.10.4 9:21

09500/09687_ihou