OCTAGONAL /ɑkˈtæɡ.ə.n(ə)l/ ► audio Scrabble 12 Words With Friends 16 Definition adjective of or relating to or shaped like an octagon. — synonyms: octangular See all 142 words you can make from OCTAGONAL → 9-letter words Words starting with O Words ending with L ← Unscramble different letters