offender

noun
UK /əˈfɛndə/
US /əˈfɛndər/

A person who does something wrong or breaks a rule.

The police caught the offender who stole the bike.


OTHER MEANINGS

2. A person who commits a crime.

The offender was sentenced to two years in prison.

3. A person or thing that causes annoyance or displeasure.

Loud music at night is a real offender in this neighborhood.

4. A team or player that breaks the rules of a game.

The referee warned the offender about rough play.