杞人忧天 qǐrényōutiān groundless fears Definitions Defs Origin Strokes Stroke Words Sentences Sents 杞 qǐ Qi State A vassal state of the Zhou Dynasty located in present-day Qi County, Henan province人 rén noun person person; people; human being; a human忧 憂 yōu nounverb to worry to worry or be concerned; to feel anxious; sorrowful; sad天 tiān noun sky sky; heavens; the space above the earth