rambunctious

英 [ræm'bʌŋ(k)ʃəs] 美[ræm'bʌŋkʃəs]

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"

2. It's not the chirping , rambunctious play that they did when they first arrived.: 他们现在已经不像刚开始见面那会儿, 总是冲着对方乱叫,或者在玩耍时动作粗暴.