bulletproof

Synonyms

impregnable, indomitable, insuperable, insurmountable, invincible, invulnerable, unbeatable, unconquerable, unstoppable;

Antonyms

superable, surmountable, vincible, vulnerable;

Near Antonyms

exposed, imperiled (or imperilled), insecure, liable, open, susceptible, unguarded, unprotected, unsafe;

defenseless, helpless, powerless, weak;

Related Words

inviolable, unassailable, unbreachable, untouchable;

armored, defended, guarded, protected, safe, safeguarded, secure, shielded;

unbeaten, unbowed, unconquered, undefeated, unsubdued;