intransgressible

from The Collaborative International Dictionary of English v.0.48
Intransgressible \In`trans*gress"i*ble\, a. [L. intragressibilis
   that can not be crossed. See {In-} not, and {Transgress}.]
   Incapable of being transgressed; not to be passed over or
   crossed. --Holland.
   [1913 Webster]
    

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