köken: Inherited from Old Spanish dubda (“doubt”).
aile: ante la duda, ante la duda, la más tetuda, beneficio de la duda, dudar, dudoso, la duda ofende, no te quepa duda, por las dudas, salir de dudas, sin duda
köken: Borrowed from Classical Persian گمان (gumān). Doublet of विमन (viman, “sad, disconsolate”), a tatsama from Sanskrit विमनस् (vimanas, “sad, disconsolate”).
to waver (in opinion), be uncertain, doubt, question, be in doubt · to waver (in coming to a decision), hesitate, delay · to reflect upon, ponder, consider, deliberate
çekim: ortaç dubitātus · şimdiki dubitat · ulaç dubitāns
köken: Somewhat uncertain, but likely as a frequentative of dubō (attested only as a gloss by Paulus/Festus), denominative of *dubos (“in doubt”, adj.), from Proto-Indo-European *dwi- (“two-”) + *bʰuH- (“to be”). See dubius for details. For the relation to "two" cf. Ancient Greek δισσός (dissós, “twofold; doubtful”), δοιάζω (doiázō, “to be in two minds”) and German Zweifel (“doubt”).
Ultimately from Middle Chinese 疑問 (MC ngi mjunH, literally “doubt, suspicion + ask”), apparently borrowed later as a learned borrowing from Literary Chinese of the same source term. First attested in the early 1600s.