- The definition of unruly is someone or something that is out of control or hard to manage.
A group of pre-schoolers who are running around and being very wild are an example of students who would be described as unruly.
unruly definition by Webster's New World
- unruliness noun
unruly definition by American Heritage Dictionary
adjective un·ru·li·er, un·ru·li·est
Origin: Middle English unreuli : un-, not; see un-1 + reuli, easy to govern (from reule, rule; see rule).
- un·ruˈli·ness noun