言わぬ

don't say, won't say

→ 言う
言わ say + ぬ Negative (not)
verb · present tense Rare #42,144
don't say, won't say An old-fashioned or literary negative form; modern Japanese usually uses 言わない.
JA: 彼は何も言わぬ。
EN: He says nothing.
Conjugation of 言う

言わぬに越したことはない。

It's best not to say anything.

物言わぬ友達は今朝死んだ。

My silent friend died this morning.

言わぬと斬るぞ

Tell me, or I'll cut you down.

— Sanjuro (1962)

言わぬか!

Speak up!

— 羅生門 (1950)