1thump 
/ˈθʌmp/ verb
thumps; thumped; thump·ing /ˈθʌmp/ verb 1 : to hit or beat something or someone and make a loud, deep sound [no obj] ▪ Someone was thumping [=pounding] loudly on the door. ▪ The boat thumped against the side of the pier. [+ obj] ▪ gorillas thumping their chests ▪ I thumped [=pounded] him on the back. ▪ I was so angry I wanted to thump him (one). 2 [no obj] : to beat forcefully
▪ I could feel my heart thumping [=pounding] inside my chest. 3 always followed by an adverb or preposition [no obj] : to walk or run with loud, heavy steps
▪ She thumped [=clumped] up the stairs.
▪ I could feel my heart thumping [=pounding] inside my chest.
▪ She thumped [=clumped] up the stairs.
