Capricious, a.
Etymology: [Cf. F. capricleux, 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.
Shades of meaning
Fernald lists capricious only as an antonym, under faithful.
He lists it without comment; the entries above explain its neighbors.
Synonyms
none given