Boisterous and disorderly.
[Probably alteration of robustious, rumbustious, from robust.]
The American Heritage® Dictionary of the English Language, Fourth Edition copyright ©2000 by Houghton Mifflin Company. Updated in 2003. Published by Houghton Mifflin Company. All rights reserved.
My step-daughter's children are 4 boys and one girl, the kids are mostly rambunctious.