[1] : The Collaborative International Dictionary of English v.0.48

unalterable \unalterable\
   see alterable.
see also:
alterable 

[2] : WordNet (r) 2.0

unalterable
     adj 1: not capable of being changed or altered; "unalterable
            resolve"; "an unalterable ground rule" syn: inalterable
            ant: alterable
     2: of a sentence; that cannot be changed; "an unalterable death
        sentence"
     3: remaining the same for indefinitely long times syn: changeless
see also:
inalterable alterable changeless 

[3] : Moby Thesaurus II by Grady Ward, 1.0

86 moby thesaurus words for "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, unyielding

Unalterable >> U Words
Unalterable, definition of term: Unalterable
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