English adjective: unattackable | |||
1. | unattackable immune to attack; incapable of being tampered with | ||
Samples | An impregnable fortress. Fortifications that made the frontier inviolable. A secure telephone connection. | ||
Synonyms | impregnable, inviolable, secure, strong, unassailable | ||
Similar | invulnerable | ||
Antonyms | vulnerable | ||