sleep tight!

sleep tight

Sleep well. A phrase said to someone when they are going to sleep. A: "I think I'm going to head to bed." B: "OK, sleep tight! See you in the morning." Good night, sweetheart, sleep tight!
See also: sleep, tight
Farlex Dictionary of Idioms.

sleep ˈtight!

(informal, spoken) used especially to children before they go to bed to say that you hope they sleep well: Good night, Pat, sleep tight!
See also: sleep
Farlex Partner Idioms Dictionary
See also:
  • got
  • Everything’s going to be okay
  • everything's going to be OK
  • go for (something)
  • go for it
  • go to see a man about a dog
  • go with
  • go out with
  • go (out) with (someone)
  • (someone) is not going to thank you for (something)
References in periodicals archive
Night night Ben, sleep tight! xxx One online reader, who didn't leave a name, said: "What a sad read, I have tears in my eyes god bless you all."