Synonyms for unattackable

Synonyms for (adjective) unattackable

Synonyms: inviolable, impregnable, unassailable, unattackable, strong, secure

Definition: immune to attack; incapable of being tampered with

Usage: an impregnable fortress; fortifications that made the frontier inviolable; a secure telephone connection

Similar words: invulnerable

Definition: immune to attack; impregnable

Usage: gunners raked the beach from invulnerable positions on the cliffs