Letting up
Slack off and letting up are semantically related. In some cases you can use "Slack off" instead a verb phrase "Letting up".
Slack off
Slack off verb - Become less in amount or intensity.
Letting up and slack off are semantically related. Sometimes you can replace phrase "Letting up" with "Slack off", this terms are similar.
Cite this Source
Slack off and Letting up. (2016). Retrieved 2026, August 03, from https://thesaurus.plus/related/letting_up/slack_off
Letting up & Slack off. N.p., 2016. Web. 03 Aug. 2026. <https://thesaurus.plus/related/letting_up/slack_off>.
Slack off or Letting up. 2016. Accessed August 03, 2026. https://thesaurus.plus/related/letting_up/slack_off.
Google Ngram Viewer shows how "letting up" and "slack off" have occurred on timeline