troublemaker
US /ˈtrʌb.əlˌmeɪ.kɚ/
UK /ˈtrʌb.əlˌmeɪ.kɚ/
1.
a person who habitually causes trouble, especially by inciting arguments or disrupting order
:
•
He's always been a bit of a troublemaker in class.
•
The new employee quickly gained a reputation as a troublemaker.