invulnerable
[adjective]
Synonyms: safe, impenetrable, indestructible, insusceptible, invincible, proof against, secure, unassailable

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Antonyms: vulnerable

[TahlilGaran] English Synonym Dictionary ▲

in‧vul‧ne‧ra‧ble /ɪnˈvʌlnərəbəl/ adjective
someone or something that is invulnerable cannot be harmed or damaged if you attack or criticize them Antonym : vulnerable:
Gerry’s confidence made him feel invulnerable.
invulnerable to
We will not be satisfied until this city is safe and invulnerable to attack.
—invulnerability /ɪnˌvʌlnərəˈbɪləti, ɪnˌvʌlnərəˈbɪlɪti/ noun [uncountable]

[TahlilGaran] Dictionary of Contemporary English ▲