inviolable
adjective
1. incapable of being transgressed or dishonored
- the person of the king is inviolable
- an inviolable oath
Similar word(s): unassailable, untouchable
2. immune to attack; incapable of being tampered with
- fortifications that made the frontier inviolable
Similar word(s): invulnerable, impregnable, secure, strong, unassailable, unattackable
3. must be kept sacred
Similar word(s): sacred, inviolate, sacrosanct
4. not capable of being violated or infringed
Similar word(s): inalienable, unalienable, absolute, infrangible