Flexible and Slack

Flexible

Flexible adjective - Not bound by rigid standards.
Usage example: parents with a flexible attitude when it comes to the children's bedtime

Slack is a synonym for flexible. In some cases you can use "Slack" instead an adjective "Flexible".

Nearby Words: flexibility, flex, flexibly, flexion

Slack

Slack adjective - Not bound by rigid standards.
Usage example: slack supervision on the project

Flexible is a synonym for slack in loose topic. Sometimes you can use "Flexible" instead an adjective "Slack", if it concerns topics such as relaxed.

Cite this Source
Slack and Flexible. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/flexible/slack
Flexible & Slack. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/flexible/slack>.
Slack or Flexible. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/flexible/slack.
Google Ngram Viewer shows how "flexible" and "slack" have occurred on timeline