Synonyms of inviolable

2 Syllables
safest, sacred, home-free, safer, blessed, holy
3 Syllables
sacrosanct, hallowed, enthroned, bulletproof
4 Syllables
unthreatened, unmolested, invincible
5 Syllables
nonnegotiable, nontransferable, untransferable, inalienable, impenetrable, unattackable, unsurmountable