From WordNet (r) 2.0 [wn]:
From Moby Thesaurus II by Grady Ward, 1.0 [moby-thes]:
27 Moby Thesaurus words for "unavailable": abortive, beyond reach, bootless, closed forever to, closed to, fruitless, impenetrable, impervious, inaccessible, ineffective, ineffectual, lost to, out of reach, un-come-at-able, unaccessible, unapproachable, unattainable, unavailing, undiscoverable, ungettable, unobtainable, unprocurable, unproductive, unreachable, unsecurable, useless, vain
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