Aha

Part of speech: interjection

Pronunciation: /ɑːhɑː/

Definitions

1. A sudden exclamation expressing discovery, realization, or triumph upon understanding something previously unclear
2. An expression used to convey sudden clarity, joy at a recently uncovered truth, or realization in a moment of insight
3. A vocalization signifying a moment of enlightenment, victory in understanding, or a breakthrough in thought process

Etymology: "Aha" is about as simple as English interjections get: it is "ah" plus "ha," two sounds that each already carried their own meanings before being joined. "Ah" expresses recognition or realization, while "ha" is a laugh or a sharp exclamation of triumph, so the pairing packs a moment of understanding and a flash of satisfaction into one burst of breath. The word itself is a plain compound in the sense that no single earlier source produced it; speakers simply combined two familiar exclamations.

Synonyms: eureka, I see, understanding, discovery