WordWeb Online

1. Capable of or tending to change in form or quality or nature
   "a changeable substance";
   - mutable
    
2. Such that alteration is possible; having a marked tendency to change
   "changeable moods";
   - changeful
    
3. Subject to change
   "a changeable climate";
   - uncertain, unsettled
    
4. Varying in colour when seen in different lights or from different angles
   "changeable taffeta";
   - chatoyant, iridescent, shot

See also: adjustable, astatic, changeability, changeableness, checkered [N. Amer], chequered [Brit, Cdn], colorful [US], colourful [Brit, Cdn], distortable, erratic, exchangeable, fickle, fluid, inconstant, jittering, kaleidoscopic, kaleidoscopical, mercurial, mobile, mutable, open-ended, quick-change, quick-drying, quicksilver, reversible, unstable, variable, volatile

Antonym: immutable, unchangeable

Encyclopedia: Changeable