in·vi·o·la·ble 
(ĭn-vīə-lə-bəl)
(ĭn-vīə-lə-bəl)adj.
1. Secure from violation or profanation: an inviolable reliquary deep beneath the altar.
2. Impregnable to assault or trespass; invincible: fortifications that made the frontier inviolable.
[Middle English, from Old French, from Latin inviolābilis : in-, not; see IN-1 + violāre, to violate; see VIOLATE.]
in·vi′o·la·bili·ty, in·vio·la·ble·ness n.
in·vio·la·bly adv.