Powerless
Powerless adjective - Unable to act or achieve one's purpose.
Slumberous and powerless are semantically related. In some cases you can use "Slumberous" instead an adjective "Powerless".
Slumberous
Slumberous adjective - Desiring or needing sleep.
Powerless and slumberous are semantically related. Sometimes you can use "Powerless" instead an adjective "Slumberous".
Cite this Source
Slumberous and Powerless. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/powerless/slumberous
Powerless & Slumberous. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/powerless/slumberous>.
Slumberous or Powerless. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/powerless/slumberous.
Google Ngram Viewer shows how "powerless" and "slumberous" have occurred on timeline