Is “Aha” a Scrabble word?
Yes
AHA
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Aha
/ɑːhɑː/
interjection
1.An exclamation of understanding, realization, invention, or recognition.
“Aha! That will work.”
2.An exclamation of surprise, exaltation, or contempt.
“Aha! Now I've got you!”