何も聞いてない

haven't heard anything

→ 何
phrase Uncommon #17,803
haven't heard anything A casual form of 何も聞いていない. 何も means “anything” with a negative verb; depending on context, it can also mean “didn't hear anything.”
JA: そのニュースについては、まだ何も聞いてない。
EN: I haven't heard anything about that news yet.

何も聞いてない

I didn't hear anything.

— ロード・オブ・ザ・リング/王の帰還 (2003)

まだ何も何も聞いてない?

Haven’t you heard anything yet?

— Hoje Eu Quero Voltar Sozinho (2014)

どうやら君は彼から何も聞いてないようだ

Apparently, you haven't heard anything from him.

— スター・トレックII カーンの逆襲 (1982)

それについては何も聞いてない

I haven't heard anything about that.

何も聞いてない

I haven't heard anything!

— ニュー・シネマ・パラダイス (1988)

俺は全く何も聞いてない

I haven't heard anything at all.