[syn: dark, dour, glowering, glum, moody, morose, saturnine, sour, sullen]
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
WordNet (r) 3.0 (2006):
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: dogged, dour, persistent,
           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:
       dour, 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,
       dour, glowering, glum, moody, morose, saturnine,
       sour, sullen]
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