to be allowed (to do something); to be permitted (to do something); may · to be allowed or permitted to do something implied or previously stated; may · expresses a prediction with mild doubt, that something is estimated or probable
çekim: geçmiş durfte · ortaç gedurft · şimdiki darf · ulaç dürfend
eş: können
köken: From Middle High German durfen, dürfen, from Old High German durfan, from Proto-West Germanic *þurban, cognate with Ancient Greek τέρπω (térpō, “I delight, please”), English tharf. See können for the origin of the historically unexpected umlaut.
should (indicates that an action is considered by the speaker to be obligatory) · ought (indicates that the subject of the sentence has some obligation to execute the sentence predicate.) · will likely (indicates that the subject of the sentence is likely to execute the sentence predicate.)
çekim: geçmiş devi · ortaç devido · şimdiki deve
köken: From Old Galician-Portuguese dever, from Latin dēbēre (“to owe”).
köken: From Middle Ukrainian слѣдъ (slid), from Old East Slavic слѣдъ (slědŭ), from Proto-Slavic *slědъ, from Proto-Balto-Slavic *sláidus, from Proto-Indo-European *sleydʰ-.
to owe something, to be under obligation to and for something · to be bound, in duty bound to do something; "ought", "must", "should" · to be owed, to be due (when in passive voice)
çekim: ortaç dēbitus · şimdiki dēbet · ulaç dēbēns
eş: cogo, decet, necesse est, oportet, opus est, par est
köken: Contraction of *dēhibeō, from dē- + habeō (“have”), though "I hold away (from someone)". See the same contraction in dēbilis. Compare the later formed dēhabeō.
aile: dēbitiō, dēbitor, dēbitrix, dēbitum
(passive voice of obligō only)
… nēmō sē iūdicet quicquam dēbēre quī tempus accēpit, cum interim hoc ūnum est quod nē grātus quidem potest reddere.
köken: From Proto-Celtic *dligeti (compare Old Irish dligid (“be entitled to; deserve”)), from Proto-Indo-European *dʰlegʰ- (compare Gothic 𐌳𐌿𐌻𐌲𐍃 (dulgs, “debt”) and Old Church Slavonic длъгъ (dlŭgŭ, “debt”)).