CARBOXYL Scrabble 22 Words With Friends 24 Definition adjective relating to or containing the carboxyl group or carboxyl radical. — synonyms: carboxylic noun the univalent radical -COOH. — synonyms: carboxyl_group See all 113 words you can make from CARBOXYL → 8-letter words Words starting with C Words ending with L ← Unscramble different letters