Capricious

Ca*pri"cious (kȧ*prĭsh"ŭs), a. [Cf. F. capricieux, It. capriccioso.] Governed or characterized by caprice; apt to change suddenly; freakish; whimsical; changeable. "Capricious poet." Shak. "Capricious humor." Hugh Miller.

A capricious partiality to the Romish practices.
Hallam.

Syn. -- Freakish; whimsical; fanciful; fickle; crotchety; fitful; wayward; changeable; unsteady; uncertain; inconstant; arbitrary.

-- Ca*pri"cious*ly, adv. -- Ca*pri"cious*ness, n.