Adjective
-
not capable of being violated or infringed
"infrangible human rights"
-
must be kept sacred
-
immune to attack
incapable of being tampered with
"an impregnable fortress"
"fortifications that made the frontier inviolable"
"a secure telephone connection"
- unattackable -
incapable of being transgressed or dishonored
"the person of the king is inviolable"
"an inviolable oath"