SuGoiSuす語彙すGrammar › N1 · 10 Obligation and prohibition
〜ぬ: not (archaic negative)
N1 · 10 Obligation and prohibition
Classical negative ending, the old equivalent of ない.
ない-stem + ぬ (言わぬ). Spoken: ん (知らん). 連用: ず (言わず); attributive: ざる. Frozen phrases: 知らぬが仏, 〜ぬ間に. Common in samurai and fantasy lines.
Examples
知らぬ間に夜になった。
Before I knew it, night had come.
何も言わぬ方がよい。
It is better to say nothing.