capricious

adjectives

changeable

"a capricious summer breeze"; "freakish weather"

capricious, freakish

is derived from

determined by chance or impulse or whim rather than by necessity or reason

"a capricious refusal"; "authoritarian rulers are frequently capricious"; "the victim of whimsical persecutions"

capricious, impulsive, whimsical

is derived from

is derived from