Incommutable
[adj] not subject to alteration or change
[adj] not interchangeable or able to substitute one for another; "a rare incommutable skill"
Related Information
Related Terms
changeless, constant, immutable, inconvertible, indefeasible, inert, insusceptible of change, intransmutable, invariable, irretrievable, irreversible, irrevocable, lasting, noble, nonreturnable, nonreversible, permanent, reverseless, unalterable, unaltera