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Adjective: rumbustious  rúm'bús-chus or rúm'bús-tee-us
Usage: Brit (N. Amer: rambunctious)
  1. Noisy and lacking in restraint or discipline
    "beneath the rumbustious surface of his paintings is sympathy for the vulnerability of ordinary human beings";
    - boisterous, rambunctious [N. Amer], robustious [archaic], unruly

See also: disorderly