half-assed \ˈ ̷ ̷| ̷ ̷\adjective 1.slang: lacking significance, adequacy, or completeness : deficient < wasn't going to do a half-assed job — R.O.Bowen > 2.slang: lacking intelligence, ability, or experience : stupid < those half-assed women on Quality Hill want to kick it out of town — Conrad Richter >