Main Entry: huh

Pronunciation: \a grunt articulated as a syllabic m or n with a voiceless onset, or as the syllable ˈhə or ˈhəⁿ, often ending in a glottal stop, and uttered with a range of intonations; often read as ˈhə\

Function: interjection

Etymology: imitative of a grunt

Date: 1608

—used to express surprise, disbelief, or confusion, or as an inquiry inviting affirmative reply