[1] : The Collaborative International Dictionary of English v.0.48

dour \dour\, a. cf. f. dur, l. durus.
   hard; inflexible; obstinate; sour in aspect; hardy; bold.
   scot.
   1913 webster

         a dour wife, a sour old carlin.          --c. reade.
   1913 webster doura

[2] : WordNet (r) 2.0

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
see also:
bulldog dogged pertinacious tenacious unyielding forbidding 
grim dark glowering glum moody 
morose saturnine sour sullen 

[3] : Moby Thesaurus II by Grady Ward, 1.0

110 moby thesaurus words for "dour":
   spartan, spartanic, adamant, adamantine, astringent, austere,
   authoritarian, beetle-browed, black, black-browed, bleak,
   cast-iron, cheerless, cold, crabbed, dark, dejected, demanding,
   dismal, dreary, dumpish, exacting, exigent, firm, flinty,
   forbidding, frowning, fundamentalist, gloomy, glowering, glum,
   grim, grum, hard, hard-core, hard-nosed, hardy, harsh, hidebound,
   immovable, immutable, implacable, impliable, inclement, inelastic,
   inexorable, inflexible, intransigent, iron, ironbound, ironclad,
   ironhanded, irreconcilable, lowering, melancholy, meticulous,
   moodish, moody, mopey, moping, mopish, morose, mumpish,
   muscle-bound, obdurate, obstinate, orthodox, procrustean, purist,
   puristic, puritan, puritanic, relentless, rigid, rigorist,
   rigoristic, rigorous, rock-ribbed, rockbound, rough, rugged,
   saturnine, scowling, severe, sour, steely, stern, stiff,
   straightlaced, straitlaced, strict, stringent, stubborn, sulky,
   sullen, surly, tough, ugly, unaffected, unalterable, unbending,
   unchangeable, uncompromising, unfriendly, ungentle, ungiving,
   unmoved, unrelenting, unsparing, unyielding

Dour >> D Words
Dour, definition of term: Dour
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