IMPERMISSIBLE /ˌɪmpɝˈmɪsɪbl/ Scrabble 21 Words With Friends 26 Scrabble letter values: I1M3P3E1R1M3I1S1S1I1B3L1E1 = 21 Definition adjective not permitted. adjective not allowable. Examples “impermissible behavior” See all 455 words you can make from IMPERMISSIBLE → 13-letter words Words starting with I Words ending with E ← Unscramble different letters