1. the state of being invalid or not legally or officially acceptable
2. the condition of being physically disabled or chronically ill
Usage: formal; somewhat dated

Examples

• The court ruled on the invalidity of the contract due to missing signatures.
• The invalidity of his passport prevented him from traveling abroad.
• Legal experts questioned the invalidity of the election results.
• The insurance company cited the invalidity of her claim.
• His invalidity forced him to retire early from his job.
• The family struggled with the financial burden of his invalidity.
• She received benefits due to her permanent invalidity.