1. to confirm or prove that something is true, accurate, or acceptable
2. to make something legally or officially acceptable
3. to recognize or affirm the worth or feelings of someone

Examples

• The scientist needed to validate her research findings through additional experiments.
• Please validate your parking ticket at the front desk.
• The data must be validated before we can publish the report.
• His passport was validated for international travel.
• The teacher tried to validate each student’s concerns about the assignment.
• We need to validate the software before releasing it to customers.
• The court will validate the will next week.