1. to make someone or something ineligible or unfit for a position, competition, or privilege
2. to declare someone unable to participate due to rule violations or inadequate qualifications

Examples

• The runner was disqualified for using performance-enhancing drugs.
• His criminal record will disqualify him from the job.
• The judge disqualified the contestant for breaking the rules.
• Poor eyesight may disqualify you from becoming a pilot.
• The team was disqualified for having too many players on the field.
• Missing the deadline will disqualify your application.
• The referee disqualified the boxer for unsportsmanlike conduct.