Thesaurus

slack

adjective

Synonyms & Antonyms of slack

(Entry 1 of 3)

2 not bound by rigid standards
  • slack supervision on the project

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3 not tightly fastened, tied, or stretched
  • left the ropes slack

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slack

noun

Synonyms & Antonyms of slack (Entry 2 of 3)

1 an allowable margin of freedom or variation
  • our boss doesn't cut us any slack when it comes to being back from lunch on time

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2 the extent to which something hangs or dips below a straight line
  • take up the slack of a rope

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3 slacks plural an outer garment covering each leg separately from waist to ankle
  • she prefers wearing slacks instead of a dress

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slack

verb

Synonyms & Antonyms of slack (Entry 3 of 3)

to make less taut
  • the skipper ordered the crew to slack off the sheets on the mainsail

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See the Dictionary Definition 

Frequently Asked Questions About slack

How is the word slack different from other adjectives like it?

Some common synonyms of slack are lax, neglectful, negligent, and remiss. While all these words mean "culpably careless or indicative of such carelessness," slack implies want of due or necessary diligence or care.

slack workmanship

When might lax be a better fit than slack?

While in some cases nearly identical to slack, lax implies a blameworthy lack of strictness, severity, or precision.

a reporter lax about accurate quotation

When could neglectful be used to replace slack?

The words neglectful and slack can be used in similar contexts, but neglectful adds a more disapproving implication of laziness or deliberate inattention.

a society callously neglectful of the poor

In what contexts can negligent take the place of slack?

While the synonyms negligent and slack are close in meaning, negligent implies inattention to one's duty or business.

negligent about writing a note of thanks

When is it sensible to use remiss instead of slack?

The synonyms remiss and slack are sometimes interchangeable, but remiss implies blameworthy carelessness shown in slackness, forgetfulness, or neglect.

had been remiss in their familial duties

Learn More About slack

Time Traveler for slack

Time Traveler

The first known use of slack was before the 12th century

See more words from the same century

Thesaurus Entries Near slack

slabs

slack

slacked

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Cite this Entry

“Slack.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/slack. Accessed 28 Jan. 2022.

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More from Merriam-Webster on slack

Nglish: Translation of slack for Spanish Speakers

Britannica English: Translation of slack for Arabic Speakers

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