/ hʌ; NAmE / exclamation
1.
people use Huh? at the end of questions, suggestions, etc., especially when they want sb to agree with them :
So you won't be coming tonight, huh?
Let's get out of here, huh?
2.
people say Huh! to show anger, surprise, disagreement, etc. or to show that they are not impressed by sth :
Huh! Is that all you've done?
3.
people say Huh? to show that they have not heard what sb has just said :
'Are you feeling OK?' 'Huh?'
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WORD ORIGIN
natural utterance: first recorded in English in the early 17th cent.