grouch/ɡɹaʊt͡ʃ/EtymologyFrom Middle English grouchen, variant of grucchen (“to complain, mumble, murmur”). See grutch.grouch means A complaint, a grumble, a fit of ill-humor. Lexicurio rates it Distinctive — a strength score of 65 out of 100.nounA complaint, a grumble, a fit of ill-humor.“But today he had noticed from the moment he had got out of bed that something was amiss with the world. Either he was in the grip of some divine discontent due to the highly developed condition of his soul, or else he had a grouch.”One who is grumpy or irritable.“I don't feel like hanging around with that grouch.”verbTo be grumpy or irritable; to complain.“He spent all his time grouching about the problem instead of fixing it.”