conundrumyoudaoicibaDictYouDict
conundrum: [16] Conundrum originally appeared in all manner of weird and wonderful guises – conimbrum, conuncrum, quonundrum, connunder, etc – before settling down to conundrum in the late 18th century. It bears all the marks of one of the rather heavy-handed quasi-Latin joke words beloved of scholars in the 16th and 17th centuries, and a mid-17thcentury commentator attributed it to Oxford university. At first it meant ‘whim’ and then ‘pun’; the current sense ‘puzzling problem’ did not develop until the end of the 18th century.
conundrum (n.)youdaoicibaDictYouDict
1590s, Oxford University slang for "pedant," also "whim," etc., later (1790) "riddle, puzzle." Also spelled quonundrum. The sort of ponderous pseudo-Latin word that was once the height of humor in learned circles.