Jumble
early 16th century: probably symbolic.
wiktionary
From Middle English jumbelen, alteration of jumbren, jombren, a variant of jumpren, frequentative of jumpen(“to jump”), equal to jump + -le. More at jumber, jump, jumper.
(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.)
etymonline
jumble (v.)
1520s, "to move confusedly" (intransitive), perhaps coined on model of stumble, tumble, etc., and onomatopoeic or felt as suggestive of the action indicated. Transitive meaning "mix in a confused mass" is from 1540s. In 17c. it was yet another euphemism for "have sex with" (a sense first attested 1580s). Related: Jumbled; jumbling.
jumble (n.)
"a confused mixture," 1660s, from jumble (v.). Jumble-sale is from 1931. The word meaning "type of thin, crisp cake" (1610s) is probably unrelated.
