grouchy definitions WordNet (r) 3.0 (2005) adj 1: annoyed and irritable [syn: crabbed, crabby, cross, fussy, grouchy, grumpy, bad-tempered, ill- tempered] Merriam Webster's adjective (grouchier ... Merriam Webster's biographical name Emmanuel 1766-1847 Marquis de Grouchy French general Oxford Reference Dictionary adj. (grouchier, grouchiest) colloq. discontented ... adv. grouchiness n. Collin's Cobuild Dictionary If someone is grouchy, they are very bad-tempered and complain a lot. (INFORMAL ... Your grandmother has nothing to stop her from being bored, grouchy and lonely. ADJ [disapproval] Moby Thesaurus beefing, bellyaching, bitching, complaining ...