bumping
bump-ing
verb
Hitting or knocking against something, often accidentally, or moving with jolts.
"The car was bumping along the rough track."
noun
The action or sound of repeatedly hitting or moving with jolts.
"There was a constant bumping from the engine."
Thesaurus
Synonyms: knock, bump, kick downstairs, demote, break, relegate, slap, blow, prominence, extrusion, gibbosity, protuberance
Antonyms: advance, elevate, kick upstairs, promote, raise, upgrade