invulnerable

/ɪnˈvʌlnər(ə)bəl/

Other forms: invulnerably

Something that's invulnerable is impossible to damage or injure, like the strongest, most rock solid concrete fort reinforced with steel bars. Or Mother Theresa's reputation.

From the Latin invulnerabilis, meaning “not wounding,” came the English invulnerable, an adjective meaning invincible or immune to attack. Some people look to vaccines to make them invulnerable. Others use body armor. Philosopher Henry David Thoreau, on the other hand, relied upon music: “When I hear music, I fear no danger. I am invulnerable."

Definitions of invulnerable

1. adjective

   immune to attack; impregnable
   “gunners raked the beach from invulnerable positions on the cliffs”

   synonyms:

   unconquerable

   not capable of being conquered or vanquished or overcome

   protected

   kept safe or defended from danger or injury or loss

   safe

   free from danger or the risk of harm

   secure

   free from danger or risk

   air-tight, airtight

   having no weak points

   bombproof, shellproof

   able to resist the explosive force of bombs and shells

   defendable, defensible

   capable of being defended

   entrenched

   dug in

   impregnable, inviolable, secure, strong, unassailable, unattackable

   immune to attack; incapable of being tampered with

   tight

   set so close together as to be invulnerable to penetration

   sheltered

   protected from danger or bad weather

   untouchable

   beyond the reach of criticism or attack or impeachment

   antonyms:

   vulnerable

   susceptible to attack

   conquerable

   subject to being conquered or overcome

   unprotected

   lacking protection or defense

   dangerous, unsafe

   involving or causing danger or risk; liable to hurt or harm

   insecure, unsafe

   lacking in security or safety

   susceptible

   (often followed by `of' or `to') yielding readily to or capable of

   assailable, open, undefendable, undefended

   not defended or capable of being defended

   compromising

   vulnerable to danger especially of discredit or suspicion

   defenceless, defenseless

   lacking protection or support

   endangered

   (of flora or fauna) in imminent danger of extinction

   indefensible

   not able to be protected against attack

   insecure, unsafe

   not safe from attack

   penetrable

   capable of being penetrated

   threatened

   (of flora or fauna) likely in the near future to become endangered

   under attack, under fire

   subjected to enemy attack or censure

   unguarded

   lacking protection or a guard