- boldly aggressive or courageous: a ballsy gal who isn't afraid of anyone.
Origin of ballsy
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- slang courageous and spirited
C20: from balls meaning courage, forcefulness
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 ballsiness
Online Etymology Dictionary, © 2010 Douglas Harper