an exclamation expressing triumph, surprise, etc, according to the intonation of the speaker
WordReference Random House Learner's Dictionary of American English © 2025
a•ha /ɑˈhɑ/USA pronunciation
interj.
WordReference Random House Unabridged Dictionary of American English © 2025- (used to express triumph, agreement, discovery, or other emotions or feelings).
a•ha
(ä hä′, ə hä′),USA pronunciation interj.
AHA,
A.H.A.,
- (used as an exclamation of triumph, mockery, contempt, irony, surprise, etc., according to the manner of utterance.)
AHA,
- American Heart Association.
A.H.A.,
- American Historical Association.
- American Hospital Association.
Collins Concise English Dictionary © HarperCollins Publishers::
'aha' also found in these entries (note: many are not synonyms or translations):