mutability

The state or quality of being mutable.

Changeableness, as of mind, disposition, or will; inconstancy; instability: as, the mutability of opinion or purpose.

The quality of being mutable, or subject to change or alteration, either in form, state, or essential character; susceptibility of change; changeableness; inconstancy; variation.

The quality or state of being mutable.

the quality of being capable of mutation