Synonyms for grouch Found 6 synonyms across 2 meanings for “grouch”. a bad-tempered person (noun) grumpcrankchurlcrosspatch show one's unhappiness or critical attitude (verb) grumblescold Explore Related Words Rhymes with grouchSynonyms for grumpSynonyms for crankSynonyms for churlSynonyms for crosspatchSynonyms for grumble Synonym Finder | Rhyme Finder | Poetry Editor