| Main Entry: | impenetrable |
| Part of Speech: | adjective |
| Definition: | dense |
Synonyms: |
bulletproof, close, compact, firm, hard, hermetic, impassable, impermeable, impervious, inviolable, solid, substantial, thick, unpiercable |
Antonyms: |
clear, penetrable, permeable, porous, soft, thin |
| Main Entry: | invincible |
| Part of Speech: | adjective |
| Definition: | indestructible |
Synonyms: |
bulletproof, impassable, impregnable, indomitable, insuperable, inviolable, invulnerable, irresistible, powerful, strong, unassailable, unattackable, unbeatable, unconquerable, undefeatable, unsurmountable, untouchable, unyielding |
Antonyms: |
beatable, breakable, conquerable, destructible |
| Main Entry: | invulnerable |
| Part of Speech: | adjective |
| Definition: | invincible |
Synonyms: |
bulletproof, impassable, impenetrable, impregnable, indestructible, powerful, secure, strong, unbeatable, untouchable |
| Main Entry: | armored |
| Part of Speech: | adjective |
| Definition: | heavily clad |
Synonyms: |
bulletproof, indestructible, invulnerable, ironclad, protected, shielded, steel-plated, strong, unbreakable |
Antonyms: |
breakable, unarmored, unprotected, weak |