Ill-natured \Ill`-na"tured\, a. 1. Of habitual bad temper; peevish; fractious; cross; crabbed; surly; as, an ill-natured person. 2. Dictated by, or indicating, ill nature; spiteful. ``The ill-natured task refuse.'' --Addison. 3. Intractable; not yielding to culture. [R.] ``Ill-natured land.'' --J. Philips. -- {Ill`-na"tured*ly}, adv. -- {Ill`-na"tured*ness}, n.