Lying down
Lean and lying down are semantically related. in sleep topic. In some cases you can use "Lean" instead a verb "Lying down".
Lean
Lean verb - To set or cause to be at an angle.
Cite this Source
Lean and Lying down. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/lying_down/lean
Lying down & Lean. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/lying_down/lean>.
Lean or Lying down. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/lying_down/lean.
Google Ngram Viewer shows how "lying down" and "lean" have occurred on timeline