A rambunctious person is energetic in a cheerful, noisy way.
例句
...a very rambunctious and energetic class.极其喧闹活跃的课堂
英汉词典释义
adj.
<美><口>粗暴的;喧闹的
Their rambunctious son always got into trouble.他们那个不受管束的儿子老是惹麻烦。
英英词典释义
Adjective
1. noisy and lacking in restraint or discipline;
"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"