Synonyms for billow Found 6 synonyms across 4 meanings for “billow”. a large sea wave (noun) surge rise up as if in waves (verb) wallow rise and move, as in waves or billows (verb) surgeheave become inflated (verb) ballooninflate Explore Related Words Rhymes with billowSynonyms for surgeSynonyms for wallowSynonyms for surgeSynonyms for heaveSynonyms for balloon Synonym Finder | Rhyme Finder | Poetry Editor