ill adj. 生病的；坏的；邪恶的；不吉利的；adv. 不利地；恶劣地；几乎不；n. 疾病；不幸；例句：She was taken ill suddenly. 她突然病倒了。

She was seriously ill as an infant. 她年幼时曾患重病。He looks dreadfully ill. 他看上去病得非常严重。