見ぬ

not see, do not see

→ 見る
see, watch, look at + Negative
verb Rare #30,153
not see, do not see A literary or formal negative form of 見る, often used before a noun or in the expression 見ぬふりをする, “to pretend not to see.”
JA: 彼は問題を見ぬふりをした。
EN: He pretended not to see the problem.
Conjugation of 見る

彼ね見て見ぬふりしたんだよ

He pretended not to notice.

見ぬ

Some things are better left to the imagination.

あるものを見て見ぬふりすればそれを無視しているのである

If you pretend not to see something, you’re ignoring it.

マチアスやっと理解見て見ぬふりをやめた

Mathias finally understood too and stopped pretending not to see it.

— エリート・スクワッド (2007)

見ぬふり出来ない

I can't pretend I didn't see it.

— タイタニック (1997)