IPA: //ˌmɪs.bɪˈheɪ.vjər//
KK: /mɪsˈbeɪvjər/
The act of behaving badly or improperly, often in a way that is disruptive or unacceptable.
The teacher had to address the student's misbehaviour in class.
Misbehaviour → It is formed from "mis-" (meaning wrongly or badly) and "behaviour" (from Old French *comportement*, meaning the way one conducts oneself). The word "misbehaviour" refers to conduct that is wrong or bad.
Think of 'mis-' meaning wrongly, and 'behaviour' referring to how someone acts. This helps you remember that misbehaviour means acting in a wrong or bad way.