ARBITRARINESS Scrabble 15 Words With Friends 17 Definition noun the trait of acting unpredictably and more from whim or caprice than from reason or judgment. — synonyms: flightiness, whimsicality, whimsy, whimsey, capriciousness See all 802 words you can make from ARBITRARINESS → 13-letter words Words starting with A Words ending with S ← Unscramble different letters