1. refusing to permit or accept; rejecting as invalid or unacceptable
Usage: present participle of disallow

Examples

• The referee is disallowing the goal due to an offside violation.
• The judge is disallowing that evidence in court.
• The teacher is disallowing late submissions without proper documentation.
• The system is disallowing access to unauthorized users.
• The committee is disallowing any changes to the original proposal.
• The bank is disallowing the transaction due to insufficient funds.