have a good/bad night
have a bad night
To sleep poorly or restlessly. I had a bad night last night, so I hope I don't doze off during the exam.
have a good night
1. expression A set phrase used when parting at nighttime. Bye guys! Have a good night!
2. verb To sleep well or restfully. I'm glad I had a good night before my hardest exam.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
have a good/bad ˈnightsleep well/badly during the night: He was very tired after his bad night, and wanted very much to take the day off work.
Farlex Partner Idioms Dictionary © Farlex 2017