Synonyms for legion Found 4 synonyms across 3 meanings for “legion”. archaic terms for army (noun) host a vast multitude (noun) horde amounting to a large indefinite number (adj) numerouslegion(p) Explore Related Words Rhymes with legionSynonyms for hostSynonyms for hordeSynonyms for numerousSynonyms for legion(p) Synonym Finder | Rhyme Finder | Poetry Editor