ANTIPROTON Scrabble 12 Words With Friends 15 Scrabble letter values: A1N1T1I1P3R1O1T1O1N1 = 12 Definition noun an unstable negatively charged proton. Examples “the antiparticle of a proton” See all 223 words you can make from ANTIPROTON → 10-letter words Words starting with A Words ending with N ← Unscramble different letters