Definitions

1. exclamation

an expression of surprise or realization, often at a clever or cleverly disguised solution to a problem or puzzle.

“As she figured out the puzzle, she exclaimed, ‘Aha, I finally understand!’”

2. interjection

used to express surprise or excitement at discovering a clever or cleverly disguised solution to a problem or puzzle.

“The detective’s eyes lit up as he said, ‘Aha!’ and solved the case.”