ill-natured \ˈ ̷ ̷| ̷ ̷ ̷ ̷\adjective 1.: having or showing a malevolent or spiteful disposition < ill-natured people say … that his hair … is a wig — W.M.Thackeray > 2.: having or showing a bad temper or peevish disposition : cross, surly < is pretty ill-natured until he's had his coffee > • ill-natured·ly\“lē, -li\adverb