The Collaborative International Dictionary
Betumble
Betumble \Be*tum"ble\, v. t. [imp. & p. p. Betumbled.] To throw into disorder; to tumble. [R.]
From her betumbled couch she starteth.
--Shak.
Wiktionary
betumble
vb. (context transitive English) To tumble (about); throw into disorder or disarrange the parts of.