adjective
- not conforming to or authorized by official rules or standards
Examples
- The player was penalized for wearing nonregulation equipment.
- Nonregulation modifications to the vehicle voided the warranty.
- The school banned nonregulation backpacks for security reasons.
- His nonregulation haircut violated the military dress code.
- The referee confiscated the nonregulation ball before the game.
- Nonregulation software was not permitted on company computers.