Lights out
Sleepy time and lights out are semantically related In some cases you can use "Sleepy time" instead a noun phrase "Lights out".
Sleepy time
Lights out and sleepy time are semantically related in time for bed topic. You can use "Lights out" instead a noun phrase "Sleepy time".
Cite this Source
Sleepy time and Lights out. (2016). Retrieved 2026, August 10, from https://thesaurus.plus/related/lights_out/sleepy_time
Lights out & Sleepy time. N.p., 2016. Web. 10 Aug. 2026. <https://thesaurus.plus/related/lights_out/sleepy_time>.
Sleepy time or Lights out. 2016. Accessed August 10, 2026. https://thesaurus.plus/related/lights_out/sleepy_time.
Google Ngram Viewer shows how "lights out" and "sleepy time" have occurred on timeline