inviolable

adj

1. Not violable; not to be infringed.

   “But come, for thou, be ſure, ſhalt give account / To him who ſent us, whoſe charge is to keep / This place inviolable, and therefore theſe from harm.”

   “But honeſt men’s words are Stygian oaths, and promiſes inviolable.”

   “One more request, and I am lost, / If you its earnest prayer deny ; / It is, that you preserve the most / Inviolable secrecy / As to my plan.”

   “"Now, Mr. Jones, having obtained your promise of inviolable secrecy, I come down to the essential point."”

   “"As defined by the first founders of Aya, this world and all who live on it agree to abide by the laws, customs, and regulations of a civilized society that has existed for centuries on other worlds. These rules of conduct ensure a voice for each family within our society and gives them certain inviolable rights..."”

2. Not susceptible to violence, or of being profaned, corrupted, or dishonoured.
3. Incapable of being injured or invaded; indestructible.