Synonyms for swamp Found 5 synonyms across 3 meanings for “swamp”. low land that is seasonally flooded (noun) swampland drench or submerge or be drenched or submerged (verb) drench fill quickly beyond capacity (verb) delugefloodinundate Explore Related Words Rhymes with swampSynonyms for swamplandSynonyms for drenchSynonyms for delugeSynonyms for floodSynonyms for inundate Synonym Finder | Rhyme Finder | Poetry Editor