Slack and Unable

Slack

Slack adjective - Failing to give proper care and attention.

Unable and slack are semantically related. In some cases you can use "Unable" instead an adjective "Slack".

Unable

Unable adjective - Lacking qualities (as knowledge, skill, or ability) required to do a job.

Slack and unable are semantically related. Sometimes you can use "Slack" instead an adjective "Unable".

Both words in one sentence

  • Mega Corp. While other companies have picked up some of the slack, they are unable to provide spice to the billions of addicts throughout the Imperium due to Arrakis being, effectively, Josef Venport's personal fiefdom at this point.
    Source: Mega Corp.
Cite this Source
Unable and Slack. (2016). Retrieved 2026, August 07, from https://thesaurus.plus/related/slack/unable
Slack & Unable. N.p., 2016. Web. 07 Aug. 2026. <https://thesaurus.plus/related/slack/unable>.
Unable or Slack. 2016. Accessed August 07, 2026. https://thesaurus.plus/related/slack/unable.
Google Ngram Viewer shows how "slack" and "unable" have occurred on timeline