Slack
Slack adjective - Failing to give proper care and attention.
Unreactive and slack are semantically related In some cases you can use "Unreactive" instead an adjective "Slack".
Unreactive
Unreactive adjective - (chemistry) not reacting chemically.
Slack and unreactive are semantically related in lifeless topic. Sometimes you can use "Slack" instead an adjective "Unreactive".
Mutual synonyms
Cite this Source
Unreactive and Slack. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/slack/unreactive
Slack & Unreactive. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/slack/unreactive>.
Unreactive or Slack. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/slack/unreactive.
Google Ngram Viewer shows how "slack" and "unreactive" have occurred on timeline