thwap
verb
thwapped; thwapping; thwaps
: to strike or slap against (something) with a loud, heavy impact
… she thwapped the gorgeous mahogany desk …—
Rhoda Janzen
A beach ball thwapped the window, then rolled away.—
Antonya Nelson
… brought the simple dough together in a stand mixer and kneaded it there until it thwapped quite viciously against the sides of the bowl, threatening to topple it.—
Tejal Rao
He was way up the street, his cart parked in the middle of the sidewalk, his bag now slung over his shoulder, thwapping into the side of his leg with each long stride he made.—
Mary Carter
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Merriam-Webster unabridged



