Synonyms for croup Found 4 synonyms across 2 meanings for “croup”. a disease of infants and young children (noun) the part of an animal that corresponds to the human buttocks (noun) hindquarterscrouperump Explore Related Words Rhymes with croupSynonyms for hindquartersSynonyms for croupeSynonyms for rump Synonym Finder | Rhyme Finder | Poetry Editor