1. 
[syn: crusty, curmudgeonly, gruff, ill-humored, ill-humoured]
The Collaborative International Dictionary of English v.0.48:
ill-humored \ill-humored\ ill-humoured \ill-humoured\adj.
   ill-natured; having a sour, disagreeable, or surly
   disposition. Opposite of good-natured.
   Syn: crusty, curmudgeonly, gruff.
        [WordNet 1.5 +PJC]
WordNet (r) 3.0 (2006):
ill-humored
    adj 1: brusque and surly and forbidding; "crusty remarks"; "a
           crusty old man"; "his curmudgeonly temper"; "gruff
           manner"; "a gruff reply" [syn: crusty, curmudgeonly,
           gruff, ill-humored, ill-humoured]
Moby Thesaurus II by Grady Ward, 1.0:
20 Moby Thesaurus words for "ill-humored":
   argumental, argumentative, bad-tempered, combative, contentious,
   controversial, dialectic, disputatious, eristic, evil-tempered,
   ill-affected, ill-disposed, ill-natured, ill-tempered, litigious,
   logomachic, pilpulistic, polemic, pro and con, quarrelsome