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"

See also: Cuddle. Synonymous with "brutal" it is used frequently with cuddle. "I'm going to rambunctiously cuddle you, you dumb karen."