Adjective has 1 sense

• rumbustious(s = adj.all) boisterous, rambunctious, robustious, unruly - noisy and lacking in restraint or discipline; "a boisterous crowd"; "a robustious group of teenagers"; "a social gathering that became rambunctious and out of hand"; "an unruly class"; "beneath the rumbustious surface of his paintings is sympathy for the vulnerability of ordinary human beings"