Intransmutable :: Intransmutable (a.) Not capable of being transmuted or changed into another substance.
Mutability :: Mutability (n.) The quality of being mutable, or subject to change or alteration, either in form, state, or essential character; susceptibility of change; changeableness; inconstancy; variation..
Mutable :: Mutable (a.) Capable of alteration; subject to change; changeable in form, qualities, or nature..
Transmutable :: Transmutable (a.) Capable of being transmuted or changed into a different substance, or into into something of a different form a nature; transformable..