Word Study
rumbustious
WORDNET DICTIONARY
Adjective rumbustious has 1 sense
- rumbustious(s = adj.all) boisterous, rambunctious, robustious, unruly - 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"
OXFORD DICTIONARY
rumbustious, adj. colloq. boisterous, noisy, uproarious.
Derivative
rumbustiously adv. rumbustiousness n.
Etymology
prob. var. of robustious boisterous, ROBUST
For further exploring for "rumbustious" in Webster Dictionary Online