aha
/ɑːhɑː/ interjection B1- An exclamation of understanding, realization, invention, or recognition. · Aha! That will work.
- An exclamation of surprise, exaltation, or contempt. · Aha! Now I've got you!
From the library
“Aha!” said the brigadier, stopping the servant, “the person who is ringing appears to want something more than a waiter; we will attend upon him with a gendarme.
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