adjective, balls·i·er, balls·i·est. Slang: Vulgar.
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. 2019
slang courageous and spirited
Word Origin for ballsy
C20: from balls meaning courage, forcefulness
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