Source : Webster's Revised Unabridged Dictionary (1913)

Dour \Dour\, a. [Cf. F. dur, L. durus.]
   Hard; inflexible; obstinate; sour in aspect; hardy; bold.
   [Scot.]

         A dour wife, a sour old carlin.          --C. Reade.

Source : WordNet®

dour
     adj 1: stubbornly unyielding; "dogged persistence"; "dour
            determination"; "the most vocal and pertinacious of
            all the critics"; "a mind not gifted to discover truth
            but tenacious to hold it"- T.S.Eliot; "men tenacious
            of opinion" [syn: {bulldog}, {dogged}, {pertinacious},
             {tenacious}, {unyielding}]
     2: harshly uninviting or formidable in manner or appearance; "a
        dour, self-sacrificing life"; "a forbidding scowl"; "a
        grim man loving duty more than humanity"; "undoubtedly the
        grimmest part of him was his iron claw"- J.M.Barrie [syn:
        {forbidding}, {grim}]
     3: showing a brooding ill humor; "a dark scowl"; "the
        proverbially dour New England Puritan"; "a glum, hopeless
        shrug"; "he sat in moody silence"; "a morose and
        unsociable manner"; "a saturnine, almost misanthropic
        young genius"- Bruce Bliven; "a sour temper"; "a sullen
        crowd" [syn: {dark}, {glowering}, {glum}, {moody}, {morose},
         {saturnine}, {sour}, {sullen}]