Synonyms of invulnerable

1 Syllable
strong, tight
2 Syllables
tightest, safest, home-free, safer, skintight, brass-bound, brassbound, tighter
3 Syllables
impervious, armored, steel-plated, shatterproof, powerful, secure, bulletproof
4 Syllables
unbreakable, unthreatened, imperviable, unpierceable, impregnable, unmolested, resistive, close-fitting, infrangible, nonbreakable, invincible, impassable, unbeatable, untouchable
5 Syllables
indomitable, indefeasible, inexpugnable, impenetrable, indestructible, unattackable, unconquerable, undefeatable, unsurmountable