From Middle English tumben, tomben, from Old English tumbian (“to tumble, leap, dance”), from Proto-Germanic *tūmōnan (“to turn round”). Cognate with Middle High German tumen (“to turn round”), Icelandic tumba (“to tumble”). See tumble.
tumb (third-person singular simple present tumbs, present participle tumbing, simple past and past participle tumbed)
Old High German
- German: dumm