inviolable
in-vi-o-la-ble
adjective
Too sacred or important to be violated, infringed, or broken.
"Their privacy is an inviolable right."
Thesaurus
Synonyms: unalienable, infrangible, absolute, inalienable, sacrosanct, inviolate, sacred, untouchable, unassailable, impregnable, strong, invulnerable
Antonyms: violable