köken: From northern Middle High German rētsel, rātsel, from Old High German rādisli (10th c., hapax: ze radislen, Ripuarian), from Proto-West Germanic *rādislī. Equivalent to raten + -sel. The formation was restricted to parts of Central German and was later reinforced by Middle Low German rēdesal, rēdelse. It established itself in the standard language after Luther’s usage. Upper German synonyms were…
köken: Learned borrowing from Latin mystērium, from Ancient Greek μυστήριον (mustḗrion, “a mystery, a secret, a secret rite”), from μύστης (mústēs, “initiated one”), from μυέω (muéō, “to initiate”), from μύω (múō, “to shut”).
aile: misterioso
— Vamos ver, continuou Adrião. Detesto mysterios. Fizeram-lhe alguma grosseria por lá? Se fizeram...
riddle, puzzle, enigma (a verbal puzzle or mystery) · puzzle, enigma (anything that is difficult to understand or make sense of) · conundrum, brain-teaser (difficult question, puzzle or riddle)