- 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
Word Origin and History for rambunctiously
1859, earlier rumbunctious, 1830, probably altered (by influence of ram) from rumbustious.
Online Etymology Dictionary, © 2010 Douglas Harper