- difficult to control or handle; wildly boisterous: a rambunctious child.
- turbulently active and noisy: a social gathering that became rambunctious and out of hand.
Origin of rambunctious
An Americanism dating back to 1820–30; origin uncertain
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- informal boisterous; unruly
C19: probably from Icelandic ram- (intensifying prefix) + -bunctious, from bumptious
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for rambunctiously
1859, earlier rumbunctious, 1830, probably altered (by influence of ram) from rumbustious.
Online Etymology Dictionary, © 2010 Douglas Harper