adj. 25B6; adjective IMPERVIOUS, insusceptible, immune; indestructible, impenetrable, impregnable, unassailable, inviolable, invincible, secure; proof against.
INVULNERABLE
Meaning of INVULNERABLE in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012