An exclamation representing a loud, sudden impact or collision; also the sound itself.
Imitative/onomatopoetic word, first recorded in English in the 1920s. It mimics the sound of a forceful blow or impact, similar to 'boom,' 'crash,' and 'bang'—all words created by imitating the actual sounds they represent.
Onomatopoeia like 'wham' are words that almost write their own sound effects, and different languages have surprisingly different imitations—English says 'wham' but Japanese says 'ばたん' (batan) for a similar impact, showing that even our ear for sounds is shaped by our native language.
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