Synonyms for chum Found 7 synonyms across 2 meanings for “chum”. a close friend who accompanies his buddies in their activities (noun) buddybrothercronypalsidekick a large Pacific salmon with small spots on its back (noun) Explore Related Words Rhymes with chumSynonyms for buddySynonyms for brotherSynonyms for cronySynonyms for palSynonyms for sidekick Synonym Finder | Rhyme Finder | Poetry Editor