Inactive
Inactive adjective - Slow to move or act.
Usage example: it's easiest to catch snakes early in the morning, while they're still cold and inactive
Slack is a synonym for inactive in lazy topic. In some cases you can use "Slack" instead an adjective "Inactive", when it comes to topics like behaviour, quiet, asleep.
Mutual synonyms
Cite this Source
Slack and Inactive. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/inactive/slack
Inactive & Slack. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/inactive/slack>.
Slack or Inactive. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/inactive/slack.
Google Ngram Viewer shows how "inactive" and "slack" have occurred on timeline