Synonyms for boast Found 14 synonyms across 3 meanings for “boast”. speaking of yourself in superlatives (noun) boastingself-praisejactitation show off (verb) toutswashbraggasblowblustervauntgasconade wear or display in an ostentatious or proud manner (verb) sportfeature Explore Related Words Rhymes with boastSynonyms for boastingSynonyms for self-praiseSynonyms for jactitationSynonyms for toutSynonyms for swash Synonym Finder | Rhyme Finder | Poetry Editor