1. the quality or state of being difficult to control or discipline; disorderly or rebellious behavior

Examples

• The teacher struggled with the unruliness of her students after lunch.
• His unruliness as a child often got him into trouble at school.
• The crowd’s unruliness forced the police to intervene.
• Parents were concerned about the increasing unruliness in the classroom.
• The coach addressed the team’s unruliness during practice.
• Her hair’s unruliness made it difficult to style for the formal event.