invulnerable

 
Pronunciation: /ɪnˈvʌln(ə)rəb(ə)l/

adjective

  • impossible to harm or damage: no state in the region is now invulnerable to attack by another

Derivatives

invulnerability

Pronunciation: /-ˈbɪlɪti/
noun

invulnerably

adverb

Origin:

late 16th century (earlier than vulnerable): from Latin invulnerabilis, from in- 'not' + vulnerabilis (see vulnerable)