invulnerable
Cannot be harmed
Invulnerable means incapable of being wounded, damaged, or harmed.
The word often describes mythical heroes or supernatural beings: Achilles was invulnerable except at his heel.
More commonly it appears in figurative contexts—someone invulnerable to criticism, a position invulnerable to attack, an argument invulnerable to objection.
The word suggests absolute protection, though in practice it's usually hyperbole.
Unable to be affected
- unbreakableImpossible to damage
- adamantStubbornly refusing to yield
- impregnableImpossible to capture
- ironcladImpossible to dispute
indestructible · unassailable · imperishable · undamageable · bulletproof · shatterproof · armor-plated · titanium
Impossible to pass through
- waterproofImpervious to moisture
- hermeticImpenetrably closed off
- watertightPrevents liquid from passing
- airtightImpervious to atmosphere
sealed · nonporous · unbreachable · bulletproof · fireproof · shatterproof · corrosion-resistant · weatherproof
Impossible to defeat
- unbeatableImpossible to overcome
- indestructibleImpossible to damage permanently
- immortalCannot die
- superhumanBeyond typical ability
godlike · omnipotent · supreme · undefeatable · almighty · all-powerful · unstoppable · insurmountable
Regarded as too important to alter
- inviolableImpossible to breach
- exemptNot subject to
- aboveAt greater height
- eliteSuperior select group
protected · unapproachable · unreachable · inaccessible · privileged · sanctified · hallowed · taboo
Protected from harm
- guardedWary and restrained
- defendedShielded from harm
- armoredProtected by metal covering
- barricadedSealed off defensively
entrenched · reinforced · garrisoned · protected · walled · secured · buttressed · aegis
Durable and strong
- hardyAble to endure difficulty
- robustStrong and durable
- durableAble to withstand use
- sturdySolidly built, durable
tenacious · unyielding · steadfast · undaunted · fortitude · grit · stamina · perseverance
Protected from harm
- antibodiesProteins targeting pathogens
- vaccineDisease prevention injection
- immunizationProtective medical injection
- resistantWithstanding external forces
inoculation · serum · prophylaxis · immunotherapy · antidote · protected · insusceptible · unaffected
Protective combat covering
- shieldHandheld defensive armor
- barrierObstruction preventing passage
- aegisSponsorship and protection
- guardWatchful defensive attention
protection · deflector · screen · cover · safeguard · buckler · force-field · cocoon
impervious
Unable to be affected
- unbreakableImpossible to damage
- adamantStubbornly refusing to yield
- impregnableImpossible to capture
ironclad · indestructible · unassailable · imperishable · undamageable · bulletproof · shatterproof · armor-plated · titanium · reinforced
impenetrable
Impossible to pass through
- waterproofImpervious to moisture
- hermeticImpenetrably closed off
- watertightPrevents liquid from passing
airtight · sealed · nonporous · unbreachable · bulletproof · fireproof · shatterproof · corrosion-resistant · weatherproof · leakproof
unconquerable
Impossible to defeat
- unbeatableImpossible to overcome
- indestructibleImpossible to damage permanently
- immortalCannot die
superhuman · godlike · omnipotent · supreme · undefeatable · almighty · all-powerful · unstoppable · insurmountable · titan
sacrosanct
Regarded as too important to alter
- inviolableImpossible to breach
- exemptNot subject to
- aboveAt greater height
elite · protected · unapproachable · unreachable · inaccessible · privileged · sanctified · hallowed · taboo · forbidden
shielded
Protected from harm
barricaded · entrenched · reinforced · garrisoned · protected · walled · secured · buttressed · aegis · safeguarded
tough
Durable and strong
sturdy · tenacious · unyielding · steadfast · undaunted · fortitude · grit · stamina · perseverance · endurance
immunity
Protected from harm
- antibodiesProteins targeting pathogens
- vaccineDisease prevention injection
- immunizationProtective medical injection
resistant · inoculation · serum · prophylaxis · immunotherapy · antidote · protected · insusceptible · unaffected · tolerant
armor
Protective combat covering
guard · protection · deflector · screen · cover · safeguard · buckler · force-field · cocoon · carapace
fortress
Heavily defended military structure
- citadelFortified urban stronghold
- bastionFortified defensive position
- bulwarkDefensive fortification or safeguard
rampart · redoubt · parapet · palisade · stockade · haven · refuge · sanctuary · asylum · shelter
eternal
Lasting without end
- everlastingLasting for all time
- perpetualLasting without interruption
- timelessUnaffected by eras
undying · deathless · ageless · imperishable · enduring · permanent · unfading · perennial · lasting · immutable
- Security Statussafe, secure, secured, unsafe, insecure
- invincibilityshield, armor, bulletproof, immortality, divine protection
- protectedprotected, shielded, guarded, secured, safe
- durabilitytoughness, durable, sturdiness, robustness, sturdy
- security termsPIN, password, passwords, encryption, encrypted
- Shakespeare phrasesto be or not to be, et tu Brute, all the world's a stage, out damned spot, friends Romans countrymen
invulnerablevulnerable
Open to attack
defenseless · susceptible · penetrable · vincible · exposed
invulnerabledefenseless
Without means to resist
unprotected · defenceless · undefended · unguarded · exposed
invulnerablehelpless
Unable to act independently
powerless · weak · endangered · imperiled · imperilled