Adjective inviolable has 4 senses
- inviolable - that cannot be transgressed or dishonored; "the person of the king is inviolable"; "an inviolable oath"
Antonym: violable
- impregnable, inviolable, secure, strong, unassailable, unattackable - able to withstand attack; "an impregnable fortress"; "fortifications that made the frontier inviolable"
Antonym: vulnerable (indirect, via invulnerable)
- inviolable, inviolate, sacrosanct - must be kept sacred
Antonym: profane (indirect, via sacred)
- absolute, infrangible, inviolable - not capable of being violated or infringed; "infrangible human rights"
Antonym: alienable (indirect, via inalienable)
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