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  • aha
    aha
    interjection
    (used as an exclamation of triumphant discovery, mockery, contempt, irony, surprise, etc., according to the manner of utterance.)
  • AHA
    AHA
    American Heart Association.
  • A.H.A.
    A.H.A.
    abbreviation
    American Historical Association.
Synonyms

aha

1 American  
[ah-hah, uh-hah] / ɑˈhɑ, əˈhɑ /

interjection

  1. (used as an exclamation of triumphant discovery, mockery, contempt, irony, surprise, etc., according to the manner of utterance.)


AHA 2 American  
  1. American Heart Association.


A.H.A. 3 American  

abbreviation

  1. American Historical Association.

  2. American Hospital Association.


aha British  
/ ɑːˈhɑː /

interjection

  1. an exclamation expressing triumph, surprise, etc, according to the intonation of the speaker

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Discovering in the course of this book that Kim Thayil has synesthesia — a condition where one sense triggers another — was a huge aha moment.

From Salon • Jun. 9, 2026

Mitchell has been drawing for as long as he can remember, but it was a high school classmate pointing out the permanent nature of a ballpoint pen that led to his aha moment.

From Los Angeles Times • May 16, 2025

Her big aha moment came after meeting with Janine Kyrillos, director of the Comprehensive Weight Management Program at Jefferson Health in Pennsylvania.

From Slate • Jul. 20, 2024

There’s been this collective aha moment in the country where people who are 65 are saying I’m going to live until I’m 90.

From New York Times • Jun. 20, 2024

TMa aha gripped with toe fury of hysteria, but he patiently disentangled her without minding the stabs.

From "The Once and Future King" by T. H. White

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