invulnerable
adjective/ĩvulnɨˈɾavɛl/low
in·vul·ne·rá·vel
Definition
That cannot be wounded, hurt, or damaged; immune to attack or criticism.
The hero of the legend was considered invulnerable to all weapons.
His argument seemed invulnerable to any counterattack.
Etymology
Do latim 'invulnerabilis', de 'in-' (não) + 'vulnerabilis' (vulnerável).