inviolable

comparative more inviolable · superlative most inviolable

1. Not violable; not to be infringed.

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

   a. 1682, Sir Thomas Browne, “Christian Morals”, in Henry Gardiner, editor, Religio Medici, together with a Letter to a Friend on the Death of His Intimate Friend and Christian Morals, London: W. Pickering, published 1845, part III, page 337

   4 more examples

   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.

   1667, John Milton, “Book IV”, in Paradise Lost. […], London: […] [Samuel Simmons], and are to be sold by Peter Parker […]; [a]nd by Robert Boulter […]; [a]nd Matthias Walker, […], →OCLC; republished as Paradise Lost in Ten Books: […], London: Basil Montagu Pickering […], 1873, →OCLC, lines 842–844

   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.

   1828, Thomas Castaly, “The Recorder”, in Fanny with Other Poems, page 87

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

   1929, Sir Arthur Conan Doyle, When the World Screamed

   "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..."

   2017, BioWare, Mass Effect: Andromeda (Science Fiction), Redwood City: Electronic Arts, →OCLC, PC, scene: Charter Governing Citizens of Aya, Revised, Task: Laws and Customs

   Synonyms: unbreakable, unbreachable, infrangible · Antonyms: incompliable, violable, breakable

2. Not susceptible to violence, or of being profaned, corrupted, or dishonoured.

   Synonyms: holy, sacred, sacrosanct, sacred, sacrosanct · Antonyms: violable

3. Incapable of being injured or invaded; indestructible.

   Synonyms: invincible, unassailable · Antonyms: invadable