Longman Dictionary of Contemporary English homepage

Date: 1300-1400
Origin: ah + ha

aha

interjection
     
a‧ha
used to show that you understand or realize something:
Aha! So you planned all this, did you?

Dictionary pictures of the day
Do you know what each of these is called?
What is the word for picture 1? What is the word for picture 2? What is the word for picture 3? What is the word for picture 4?
Click on any of the pictures above to find out what it is called.

Explore our topic dictionary