Source : Webster's Revised Unabridged Dictionary (1913)

Inescapable \In`es*cap"a*ble\, a.
   Not escapable.

Source : WordNet®

inescapable
     adj : impossible to avoid or evade:"inescapable conclusion"; "an
           ineluctable destiny"; "an unavoidable accident" [syn: {ineluctable},
            {unavoidable}]