Definition of "rambunxious"

"I guess the governor'd be rambunxious, as usual, if I was to ask his permission," the dutiful son remarked; "but he's going away for a few days next week, and mother won't hinder me, I know."

1873 March, W[illia]m S. Walsh, “How We Watched the Grapes”, in J[ohn] T[ownsend] Trowbridge, Lucy Larcom, editors, Our Young Folks. An Illustrated Magazine for Boys and Girls, volume IX, number III, Boston, Mass.: James R[ipley] Osgood and Company, […], page 181