OVERNIGHT

[adjective], [adverb] [not gradable] - for or during the nightWe're making an overnight stop in Paris on our way to the Dordogne.You can stay overnight if you want to.He became ill overnight and had to see a doctor.Don't forget to pack an overnight bag (= a bag for things that you need when you stay away from home for a night).(figurative) The book was an overnight (= sudden and unexpected) success.(figurative) She became a star overnight (= suddenly and unexpectedly) when she stepped in to play the leading role.