c 3 a 1 p 3 r 1 i 1 c 3 i 1 o 1 u 1 s 1 n 1 e 1 s 1 s 1 e 1 s 1
16 letters · 22 points in Scrabble
Meaning
noun the quality of being guided by sudden unpredictable impulses
noun the trait of acting unpredictably and more from whim or caprice than from reason or judgment