tumbles
tum-bles
verb
Falls suddenly and clumsily, often losing balance or control.
"The child often tumbles over his own feet."
noun
Sudden, uncontrolled falls or a series of gymnastic movements.
"The gymnast performs impressive tumbles."
Thesaurus
Synonyms: fall, tumble, spill, whirl around, whirl, topple, tip, collapse, crumple, crumble, break down, get onto