INSCRUTABLE /ˌɪnˈskɹuːtəbl/ ► audio Scrabble 15 Words With Friends 20 Definition adjective of an obscure nature. — synonyms: cryptic, cryptical, deep, mysterious, mystifying Examples “His inscrutable theories would years later become the foundation of a whole new science.” See all 1766 words you can make from INSCRUTABLE → 11-letter words Words starting with I Words ending with E ← Unscramble different letters