Invulnerable

1.

~ (to something) (that cannot be wounded or injured, incapable of being wounded or injured) ភេទនីយ, គង់ (កាប់មិនមុត)
Example: A fortification that is invulnerable to attack.

1.

Incapable of being wounded, or of receiving injury.

2.

Unanswerable; irrefutable; that can not be refuted or convinced; as, an invulnerable argument.

1.

impenetrable, impregnable, indomitable, insurmountable, steadfast, unassailable, unconquerable

1.

powerless, puny, vulnerable, weak