無 断(むだん)

むだん

noun, adverb

without permission

1. without permission, unauthorized

Doing something without obtaining prior consent or notifying the appropriate person. Used to describe actions taken without the knowledge or approval of others.

無断(むだん)欠席(けっせき)は困(こま)ります。

Unexcused absences are a problem.

無断(むだん)で写真(しゃしん)を撮(と)らないでください。

Please do not take photos without permission.

他人(たにん)の著作物(ちょさくぶつ)を無断(むだん)で転載(てんさい)することは法律(ほうりつ)違反(いはん)になる。

Reposting someone else's work without permission is a legal violation.

Forms

無(む) (without) + 断(だん) (permission/refusal). Literally 'without asking.'

Common patterns

無断(むだん) + noun: noun modifier (無断(むだん)欠席(けっせき))
無断(むだん)で + verb: adverbial (無断(むだん)で使(つか)う)

Common collocations

無断(むだん)欠席(けっせき): unexcused absence
無断(むだん)転載(てんさい): unauthorized reproduction
無断(むだん)使用(しよう): unauthorized use
無断(むだん)駐車(ちゅうしゃ): unauthorized parking
無断(むだん)欠勤(けっきん): absence from work without notice

Usage

Frequently seen on signs (無断(むだん)駐車(ちゅうしゃ)禁止(きんし) — no unauthorized parking) and in workplace rules. Carries a tone of reproach — doing something 無断(むだん)で is generally viewed negatively.

Similar words

無許可(むきょか): without a permit/license (more official/legal)
無断(むだん): without telling/asking (interpersonal)

general

Added 2026.2.24 20:07 · Revised 2026.9.4 21:31

13000/13382_mudan