The Collaborative International Dictionary of English v.0.48:

Disagreeable \Dis`a*gree"a*ble\ (d[i^]s`[.a]*gr[=e]"[.a]*b'l),
   a. [Cf. F. d['e]sagr['e]able.]
   1. Not agreeable, conformable, or congruous; contrary;
      unsuitable.
      [1913 Webster]

            Preach you truly the doctrine which you have
            received, and each nothing that is disagreeable
            thereunto.                            --Udall.
      [1913 Webster]

   2. Exciting repugnance; offensive to the feelings or senses;
      displeasing; unpleasant.
      [1913 Webster]

            That which is disagreeable to one is many times
            agreeable to another, or disagreeable in a less
            degree.                               --Wollaston.
      [1913 Webster]

WordNet (r) 3.0 (2006):

disagreeable
    adj 1: not to your liking; "a disagreeable situation" [ant:
           agreeable]
    2: unpleasant to interact with; "a disagreeable old man"
    3: not agreeing with your tastes or expectations; "found the
       task disagreeable and decided to abandon it"; "a job
       temperamentally unsympathetic to him" [syn: disagreeable,
       unsympathetic]

Moby Thesaurus II by Grady Ward, 1.0:

154 Moby Thesaurus words for "disagreeable":
   abominable, abrupt, annoying, antagonistic, antipathetic,
   at cross-purposes, at loggerheads, at odds, at variance, at war,
   bad-tempered, bearish, bitchy, bitter, blunt, brusque, cankered,
   cantankerous, churlish, clashing, contradictory, contrary, crabbed,
   cranky, cross, cross-grained, crusty, curt, cussed, differing,
   disaccordant, disagreeing, discordant, discourteous, discrepant,
   disgusting, disharmonious, dislikable, disobliging, displeasing,
   disproportionate, dissident, dissonant, distasteful, distressing,
   disturbing, divergent, excitable, feisty, foul-tasting, fractious,
   fretful, grating, grouchy, had, hostile, huffish, huffy, ill,
   ill-flavored, ill-humored, ill-mannered, ill-tempered, immiscible,
   impolite, inaccordant, incompatible, inharmonious, inhospitable,
   irascible, irritable, jangling, jarring, mean, morose, nasty,
   nauseating, nauseous, negative, noxious, objectionable, obnoxious,
   odious, offensive, ornery, out of accord, out of whack, peevish,
   perverse, pettish, petulant, querulous, repellent, repugnant,
   repulsive, revolting, rotten, rude, short, sickening, snappish,
   snappy, sour, spiteful, spleeny, splenetic, sulky, sullen, testy,
   thankless, ugly, unaffectionate, unalluring, unamiable,
   unappealing, unappetizing, unattractive, unbenign, unbenignant,
   uncivil, uncompassionate, uncompassioned, uncongenial,
   uncooperative, uncordial, uncourtly, undelectable, undelicious,
   undesirable, unengaging, unenjoyable, unfriendly, ungenial,
   ungracious, unhappy, unharmonious, uninviting, unkind, unkindly,
   unlikable, unloving, unpalatable, unpleasant, unpleasing, unsavory,
   unsympathetic, unsympathizing, untasteful, untasty, unwelcome,
   variant, waspish, whiny, woeful