Immutable

Part of speech: adjective (a.)

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, Eternal King. Milton. -- Im*mu"ta*ble*ness, n. -- Im*mu"ta*bly, adv.