Slumberous
Slumberous adjective - Desiring or needing sleep.
Slack and slumberous are semantically related. In some cases you can use "Slack" instead an adjective "Slumberous".
Slack
Slack adjective - Failing to give proper care and attention.
Slumberous and slack are semantically related. Sometimes you can use "Slumberous" instead an adjective "Slack".
Mutual synonyms
Cite this Source
Slack and Slumberous. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/slumberous/slack
Slumberous & Slack. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/slumberous/slack>.
Slack or Slumberous. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/slumberous/slack.
Google Ngram Viewer shows how "slumberous" and "slack" have occurred on timeline