tumble

From Wiktionary

Pronunciation[change]

Verb[change]

Plain form
tumble

Third-person singular
tumbles

Past tense
tumbled

Past participle
tumbled

Present participle
tumbling

A Horse and Jockey Tumbles
  1. When you tumble, you fall down over and over again.
    Tie your shoes so that you won't tumble down the stairs.