Example : A boisterous crowd.
A social gathering that became rambunctious and out of hand.
A robustious group of teenagers.
Beneath the rumbustious surface of his paintings is sympathy for the vulnerability of ordinary human beings.
An unruly class.

Synonyms : boisterous, rambunctious, robustious, rumbustious

Example : Unruly teenagers.

Synonyms : disobedient

Example : The little boy's parents think he is spirited, but his teacher finds him unruly.

Synonyms : indocile, uncontrollable, ungovernable