thump

thump
/TH_mp/

Verb
Hit (someone or something) heavily, esp. with the fist or a blunt implement: “he thumped the desk with his hand”; thump on the door”.

Noun
A heavy dull blow with a person’s fist or a blunt implement: “I felt a thump on my back”.

Synonyms
verb. pound – knock – beat – hit noun. thud