Im*mu"ta*ble (?), a. [L. immutabilis; pref. im- not + mutabilis mutable. See Mutable.]
Not mutable; not capable or susceptible of change; unchangeable; unalterable.
That by two immutable things, in which it was impossible for God to lie, we might have a strong consolation.
Heb. vi. 18.
Immutable, immortal, infinite,
-- Im*mu"ta*ble*ness, n. -- Im*mu"ta*bly, adv.
© Webster 1913.