1. the quality or state of being impervious; inability to be penetrated, affected, or influenced
Usage: often used with 'to' to indicate what cannot penetrate or affect something

Examples

• The rubber coating's imperviousness to water made it ideal for outdoor use.
• Her imperviousness to criticism frustrated her colleagues who wanted constructive feedback.
• The fortress was built with imperviousness to attack in mind.
• His imperviousness to emotional appeals made negotiation difficult.
• The material's imperviousness to stains kept it looking new for years.
• The politician's imperviousness to public opinion concerned many voters.