changeable in WordNet English dictionary

1. such that alteration is possible; having a marked tendency to change
   "changeable behavior"; "changeable moods"; "changeable prices"
   changeable  changeful 
   
2. capable of or tending to change in form or quality or nature
   "a mutable substance"; "the mutable ways of fortune"; "mutable weather patterns"; "a mutable foreign policy"
   mutable  changeable 
   
3. varying in color when seen in different lights or from different angles
   "changeable taffeta"; "chatoyant (or shot) silk"; "a dragonfly hovered, vibrating and iridescent"
   changeable  chatoyant  iridescent  shot 
   
4. subject to change
   "a changeable climate"; "the weather is uncertain"; "unsettled weather with rain and hail and sunshine coming one right after the other"
   changeable  uncertain  unsettled