misbehavior

noun

mis·​be·​hav·​ior ˌmis-bi-ˈhā-vyər 

-bē-

plural misbehaviors

1

: bad, improper, or rude behavior : ill conduct

scolded the children for their misbehavior

2

US military law : any conduct by a member of the armed forces before or in the presence of the enemy that does not conform to military standards or practice for such a situation

… is charged with desertion and misbehavior before the enemy, the latter of which carries a maximum penalty of life in prison.

—The Boston Herald

Synonyms of misbehavior

• misconduct
• wrongdoing

Examples of misbehavior in a Sentence

would not tolerate any misbehavior from her students

Recent Examples on the Web

Know More This month wasn’t Gallego’s first experience with vague allegations of personal misbehavior. —David Weigel, semafor.com, 29 Apr. 2026

Unlike public schools or Cedar Rapids Prep, the city's private schools can turn away a child for poor grades, or a history of misbehavior. —Cory Turner, NPR, 19 Apr. 2026

There are many more overt examples of Silicon Valley misbehavior sprinkled through the premiere episode of The Audacity, but the essence of Jonathan Glatzer’s tech-world satire may be in this digital billboard that appears on the side of the road. —Scott Tobias, Vulture, 12 Apr. 2026

Rumors about misbehavior by Swalwell have circulated on social media in recent weeks, broadcast by a group of progressive social media influencers. —Allison Gordon, CNN Money, 10 Apr. 2026

Word History

First Known Use

15th century, in the meaning defined at sense 1

Rhymes for misbehavior

• misbehaviour
• behavior
• behaviour
• havior
• savior
• saviour