(n.) A dull sound without resonance, like that produced by striking with, or striking against, some comparatively soft substance; also, the stroke or blow producing such sound; as, the thud of a cannon ball striking the earth.

beat bump chink click clink clop clump clunk crump dull thud flick flump hit pad pat patter pitapat pitter-patter plump plunk pop pound rap smite strike tap thump tick tinkle tunk wham whomp