Definitions of mutable

1. Mutability.

2. Mutably.

3. 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"

4. Changeable; inconstant; unsettled; unstable; fickle.

5. Easily and frequently changed; fickle; unstable.

6. That may be changed: subject to change: inconstant.

7. Subject to change; changeable; alterable; unsettled; inconstant.