Word Study
unalterable
OXFORD DICTIONARY
unalterable, adj. not alterable.
Derivative
unalterableness n. unalterably adv.
THESAURUS
unalterable
adamant, adamantine, cast-iron, changeless, constant, dour, firm, fixed, flinty, grim, hard, hard-core, immovable, immutable, implacable, impliable, inalterable, incommutable, inconvertible, indefeasible, inductile, inelastic, inert, inexorable, inextensible, inextensile, inextensional, inflexible, insusceptible of change, intractable, intractile, intransigent, intransmutable, invariable, iron, irreconcilable, irresilient, irretrievable, irreversible, irrevocable, lasting, noble, nonelastic, nonreturnable, nonreversible, nonstretchable, permanent, relentless, reverseless, rigid, rigorous, rock-ribbed, steely, stern, stiff, stubborn, unaffected, unalterative, unaltered, unbending, unchangeable, unchanged, unchanging, uncompromising, undeflectable, undeviating, unextendible, unextensible, unflexible, ungiving, unlimber, unmalleable, unmodifiable, unmovable, unmoved, unpliable, unpliant, unrelenting, unremitting, unrestorable, unreturnable, unsusceptible, untractable, unvariable, unvarying, unyieldingROGET THESAURUS
unalterable
Stability
N stability, immutability, unchangeability unchangeableness, constancy, stable equilibrium, immobility, soundness, vitality, stabiliment, stiffness, ankylosis, solidity, aplomb, establishment, fixture, rock, pillar, tower, foundation, leopard's spots, Ethiopia's skin, permanence, obstinacy, unchangeable, immutable, unaltered, unalterable, not to be changed, constant, permanent, invariable, undeviating, stable, durable, perennial, fixed, steadfast, firm, fast, steady, balanced, confirmed, valid, fiducial, immovable, irremovable, riveted, rooted, settled, established, vested, incontrovertible, stereotyped, indeclinable, tethered, anchored, moored, at anchor, on a rock, rock solid, firm as a rock, firmly seated, firmly established, deep-rooted, ineradicable, inveterate, obstinate, transfixed, stuck fast, aground, high and dry, stranded, stuck, jammed, unremovable, quiescent, deterioration, indefeasible, irretrievable, intransmutable, incommutable, irresoluble, irrevocable, irreversible, reverseless, inextinguishable, irreducible, indissoluble, indissolvable, indestructible, undying, imperishable, incorruptible, indelible, indeciduous, insusceptible, insusceptible of change, Int, stet, littera scripta manet.For further exploring for "unalterable" in Webster Dictionary Online