noun
rambunctious kid; wild child
Affectionate or mildly scolding term for a boisterous, unruly child. Often used by parents or caregivers.
うちの暴れん坊は今日も公園で走り回っている。
Our little wild one is running around the park again today.
あの暴れん坊たちを静かにさせるのは大
It's tough to get those rambunctious kids to quiet down.
noun
Refers to a rough, unruly person, often an adult or teenager. Can be derogatory. Synonymous with 暴れ者.
See also: 暴れ者
夜の繁華街には暴れん坊がたむろしていることがある。
Rowdies sometimes hang around the nightlife district.
彼は若い頃、地元で有名な暴れん坊だったらしい。
Apparently he was a well-known roughneck in the area when he was young.
暴れ者 is a more literal 'violent person' and sounds slightly more formal or descriptive than 暴れん坊, which is more colloquial and often affectionate.
やんちゃ is a na-adjective/noun meaning 'mischievous' or 'naughty', typically for children. 暴れん坊 emphasizes wild, physical rambunctiousness more strongly.
Derived from the verb 暴れる (to act violently) + ん坊, a suffix meaning 'boy' or 'person', often used in affectionate or colloquial terms (cf. 甘えん坊, 食いしん坊).