Heedless
Heedless adjective - Not paying or showing close attention especially for the purpose of avoiding trouble.
Slack and heedless are semantically related in behaviour topic. In some cases you can use "Slack" instead an adjective "Heedless", when it comes to topics like inattentive.
Slack
Slack adjective - Failing to give proper care and attention.
Usage example: a building contractor known mainly for his firm's slack workmanship and slipshod construction
Heedless and slack are semantically related in behaviour topic. Sometimes you can use "Heedless" instead an adjective "Slack", if it concerns topics such as careless, inattentive.
Mutual synonyms
Cite this Source
Slack and Heedless. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/heedless/slack
Heedless & Slack. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/heedless/slack>.
Slack or Heedless. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/heedless/slack.
Google Ngram Viewer shows how "heedless" and "slack" have occurred on timeline