Synonyms of bumping

1 Syllable
knock, plunk, bunt, jolt, slap, pound, box, plop, rap, buck, slam, pat, thwack, butt, crash, jar, crack, thud, jerk, bang, punch, thump, smack, clap, whack
2 Syllables
clatter, jostle, carom, bounce, strike, rattle, thunder, jounce, shake
3 Syllables
impinge