[1] : WordNet (r) 2.0

unreachable
     adj : inaccessibly located or situated; "an unapproachable chalet
           high in the mountains"; "an unreachable canyon"; "the
           unreachable stars" syn: unapproachable, unreached,
            out of reachp
see also:
unapproachable unreached out of reachp 

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

19 moby thesaurus words for "unreachable":
   beyond reach, closed forever to, closed to, impenetrable,
   impervious, inaccessible, lost to, out of reach, un-come-at-able,
   unaccessible, unapproachable, unattainable, unavailable,
   undiscoverable, ungetatable, ungettable, unobtainable,
   unprocurable, unsecurable

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