DEMONSTRABLE /dɪˈmɑnstɹəbl̩/ Scrabble 17 Words With Friends 21 Definition adjective necessarily or demonstrably true. — synonyms: incontrovertible adjective capable of being demonstrated or proved. — synonyms: provable Examples “It is easily demonstrable that water extinguishes fire.” See all 2259 words you can make from DEMONSTRABLE → 12-letter words Words starting with D Words ending with E ← Unscramble different letters