Changeable

Part of speech: adjective (a.)

1. Capable of change; subject to alteration; mutable; variable; fickle; inconstant; as, a changeable humor.

2. Appearing different, as in color, in different lights, or under different circumstances; as, changeable silk.

Synonyms: Mutable; alterable; variable; inconstant; fitful; vacillating; capricious; fickle; unstable; unsteady; unsettled; wavering; erratic; giddy; volatile.