From Longman Dictionary of Contemporary Englishgrouchgrouch1 /ɡraʊtʃ/ noun informal 1 [countable]BAD-TEMPERED someone who is always complaining an old grouch2 [countable]COMPLAIN something unimportant that you complain about
Examples from the Corpus
grouch• He is likely to be a grouch at first.• You're such a grouch in the morning.• Dad's such a grouch in the morning.• I am rock's foremost poet and ill-mannered grouch.• Her dad's a terrible grouch.grouchgrouch2 verb [intransitive] informal COMPLAINto complain in a slightly angry way SYN moangrouch about He’s always grouching about something!→ See Verb tableOrigin grouch1 (1800-1900) Probably from grutch “complaint” ((14-19 centuries)), from Old French grouchier “to complain” 