Synonyms for mum Found 13 synonyms across 3 meanings for “mum”. of China (noun) informal terms for a mother (noun) mamamamammamommommamommymammymummy failing to speak or communicate etc when expected to (adj) silent Explore Related Words Rhymes with mumSynonyms for maSynonyms for mamaSynonyms for mammaSynonyms for momSynonyms for momma Synonym Finder | Rhyme Finder | Poetry Editor