ふん (fun) means “humph” | MotiTan Japanese Dictionary

More examples

彼は注意されると、ふんと言って顔をそむけました。kare wa chū i sa re ru to fu n to i tte kao o so mu ke ma shi ta

When criticized, he said, "Humph," and turned away.

Signals that the speaker reacts to a remark with restrained displeasure, skepticism, or scorn rather than accepting it openly.

相手の発言などを不満に思ったり軽く見たりする気持ちを表す語。ai te no hatsu gen na do o fu man ni omo tta ri karu ku mi ta ri su ru ki mo chi o arawa su go

The Japanese interjection ふん (fun) comes from imitating the sound of air pushed briefly through the nose, not from a compound of written characters.

In English dialogue, humph often appears as a standalone reaction when a speaker treats a statement as doubtful or not worth taking seriously.