Synonyms for infirm Found 7 synonyms across 1 meaning for “infirm”. lacking bodily or muscular strength or vitality (adj) decrepitdebilefeeblericketysaplessweakweakly Explore Related Words Rhymes with infirmSynonyms for decrepitSynonyms for debileSynonyms for feebleSynonyms for ricketySynonyms for sapless Synonym Finder | Rhyme Finder | Poetry Editor