douceur
Origin
Borrowed from French douceur (“sweetness”), from Old French dolçor, dulcur, etc., from Latin dulcōr + -em, from dulcis (“sweet”). Naturalized in Middle English as douceoure, dousour but treated as a French loanword from the 17th century onward. Doublet of dulcour.
doughty
Origin
The adjective is derived from Middle English doughty (“brave, bold, valiant”), from Old English dohtiġ, dyhtiġ (“competent, good, strong, valiant”), from Proto-West Germanic *duhtīg. The English word may be analysed as dought + -y, and is cognate with Scots douchty, douchtie (“bold, valiant”), Dutch duchtig (“severe, strict”), German tüchtig (“capable, competent, efficient; big; hard”), Danish dygtig (“virtuous, proficient”), Swedish duktig (“efficient; good; capable, clever, smart”), Icelandic dygðugur (“virtuous, stable”). The noun is derived from the adjective.
douth
Origin
From Middle English douthe, douth, duweðe (“body of retainers, people, might, dignity, worth”), from Old English duguþ (“manhood, host, multitude, troops”), from Proto-West Germanic *dugunþu, *dugunþi, from Proto-Germanic *dugunþō (“power, competency, notefulness, virtue”), from *duganą (“to be useful”), from Proto-Indo-European *dʰewgʰ- (“to be ready, be sufficient”). Cognate with North Frisian døgd, døged (“ability, good deed”), Dutch deugd (“virtue”), German Tugend (“virtue”), Swedish dygd (“virtue”), Danish dyd (“virtue”), Icelandic dygð, dyggð (“virtue”). Related to dow, doughty.
downcast
Origin
The adjective is derived from Middle English doun-casten, *adoun-casten (“(adjective) cast down, dejected; (verb) to break down (something); to overcome (someone); to overturn (something)”), from down (“in a downward direction; (figurative) to destruction”), adoun (“downward”) + casten (“to throw (something), fling, hurl; to overcome (someone), defeat, overpower; [etc.]”) (from Old Norse kasta (“to cast, throw”), from Proto-Germanic *kastōną (“to throw”), from *kas- (“to throw, toss; to bring up”); further etymology uncertain), modelled similarly to other constructions in Middle English such as adoun-throwen (“to throw down”) and adoun-werpen (“to throw down”)). The English word is analysable as down- (prefix meaning ‘lower direction or position’) + cast (“that has been thrown”, adjective). The noun is derived from the adjective.