Inviolable
/ɪnˈvaɪələbl̩/
adjective
Not violable; not to be infringed.
Not susceptible to violence, or of being profaned, corrupted, or dishonoured.
Incapable of being injured or invaded; indestructible.
Synonyms: holy, sacred, sacrosanct, invincible, unassailable, unbreachable, unbreakable