Word Study
nonreturnable
CIDE DICTIONARY
nonreturnable, adj.
That may not be returned for a refund; -- of purchased goods, or containers for purchased items; as, nonreturnable bottles. Opposite of returnable . [WordNet 1.5]
THESAURUS
nonreturnable
changeless, constant, immutable, incommutable, inconvertible, indefeasible, inert, insusceptible of change, intransmutable, invariable, irretrievable, irreversible, irrevocable, lasting, noble, nonreversible, permanent, reverseless, unalterable, unalterative, unaltered, unchangeable, unchanged, unchanging, undeflectable, undeviating, unmodifiable, unremitting, unrestorable, unreturnable, unsusceptible, unvariable, unvaryingFor further exploring for "nonreturnable" in Webster Dictionary Online