un-come-at-able

from WordNet (r) 3.0 (2006)

un-come-at-able
    adj 1: difficult to reach or attain [syn: {un-come-at-able},
           {un-get-at-able}, {ungetatable}]

from The Collaborative International Dictionary of English v.0.48

Uncomeatable \Un`come*at"a*ble\, a.
   Not to be come at, or reached; inaccessible. [Colloq.]
   --Addison.
   [1913 Webster]

         My honor is infallible and uncomeatable. --Congreve.
   [1913 Webster]