robustious \roh-BUHS-chuhs\ (adjective) - 1 : Boisterous; vigorous. 2 : Coarse; rough; crude.
"O, it offends me t the soul to hear a robustious periwig-pated fellow tear a passion to tatters, to very rags, to split the ears of the groundlings, who for the most part are capable of nothing but inexplicable dumb shows and noise." -- William Shakespeare, 'Hamlet'
Robustious derives from Latin robustus, "oaken, hence strong, powerful, firm," from robur, "oak."