adjective, balls·i·er, balls·i·est. Slang: Vulgar.
Examples from the Web for ballsy
Honor called the move “ballsy” and his friend shot back, “Cerebral ballsy!”Craziest SXSW Band Names: Perfect Pussy, Death By Unga Bunga, and More|Marlow Stern|March 8, 2014|DAILY BEAST
Obama did exactly the right thing here, and in fact kind of a ballsy thing.
The next time you are downward dogging, give a thought to that ballsy broad from the Ukraine.
It was ballsy of him to reinforce his determination to overhaul healthcare.
Courteney is very funny and ballsy and not afraid to look silly.