slack 1 of 3

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slack

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noun

1
as in latitude
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

Synonyms & Similar Words

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

Synonyms & Similar Words

Antonyms & Near Antonyms

3

slack

3 of 3

verb

as in to loosen
to make less taut the skipper ordered the crew to slack off the sheets on the mainsail

Synonyms & Similar Words

Antonyms & Near Antonyms

Synonym Chooser

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

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of slack
Adjective
In the footage, the wooden wall can be seen falling forward with a thud, while two vertical cables hang behind, apparently slack. Jake Kanter, Deadline, 27 June 2025 Flying Squirrel Trampoline Park, 3305 Corporate Ave, Weston, is an indoor entertainment park with trampolines, dodgeball court, battle beam, climbing walls, ropes course, slack line, dunk hoops, ninja course arcade games, children’s areas (soft-play playground) and the Drey Café. Rod Stafford Hagwood, Sun Sentinel, 25 June 2025
Noun
Another scene showed Sharon, in a white shirt with a black jacket and slacks, holding up her raptor glove as what appeared to be a white owl flew to it. Kimberlee Speakman, PEOPLE, 13 Sep. 2025 But until Watson and Reed's return, Matthew Golden, Romeo Doubs, and Dontayvion Wicks look to pick up the slack and help Jordan Love lead the passing game. Trevor Squire, MSNBC Newsweek, 12 Sep. 2025
Verb
Whether progress endures will depend on whether state policymakers resist the urge to slack on debt reduction at the first sign of improvement. Andrew Fowler, Hartford Courant, 8 May 2025 But when their offense has slacked, their defense has always been there to bail them out. Kelly Iko, New York Times, 3 May 2025 See All Example Sentences for slack
Recent Examples of Synonyms for slack
Adjective
  • The last lazy Sunday of summer.
    Erik Kain, Forbes.com, 14 Sep. 2025
  • Unlike Disneyland or Disney World, there is no theme park, but the resort boasts a mini water park with slides and a lazy river for all ages to enjoy.
    Essence, Essence, 12 Sep. 2025
Adjective
  • The refrigerated deliveries are flexible based on your schedule and feature eco-friendly packaging.
    Kasey Caminiti, USA Today, 12 Sep. 2025
  • Crops are left unharvested in response to market conditions, but they could be marketed with connections to more flexible buyers.
    Ivanka Trump, Fortune, 12 Sep. 2025
Adjective
  • Next, carefully remove the bowl from the microwave and use a microfiber cloth to wipe away all the loosened grime.
    Maria Sabella, Better Homes & Gardens, 7 Aug. 2025
Noun
  • The 20-to-30 degrees of galactic latitude, both north and south of the galactic plane, were dubbed the Zone of Avoidance in the late 19th century, because while there were huge numbers of spiral nebulae elsewhere, all across the sky, there were none found in or near the plane of the Milky Way.
    Ethan Siegel, Big Think, 12 Sep. 2025
  • Underwater ecosystems span Japan’s islands and latitudes.
    Terry Ward, AFAR Media, 11 Sep. 2025
Verb
  • Drop the filters into the soapy water and soak them for 15-30 minutes to easily lift and loosen grease and gunk.
    Daley Quinn, Southern Living, 12 Sep. 2025
  • Simply add a little broth to loosen the pasta before reheating or serving.
    Robin Miller, AZCentral.com, 11 Sep. 2025
Adjective
  • Nobody ever did find out who was so stupid and careless enough to drop an animal trap right in front of somebody’s gate.
    Charlotte Phillipp, PEOPLE, 16 Sep. 2025
  • Agbadou has appeared sluggish and careless at the heart of defence, while Andre has lacked his customary composure in midfield.
    Steve Madeley, New York Times, 15 Sep. 2025
Adjective
  • Bateman matched The Truman Show actress in an all black ensemble consisting of dress pants, a blazer and a relaxed fit T-shirt.
    Angel Saunders, PEOPLE, 17 Sep. 2025
  • The 100% leather seat and back have just enough slack never to feel too rigid against your back, while the lower-than-average seat height (only 14 inches high) gives off a relaxed and casual vibe.
    Elissa Suh, Architectural Digest, 17 Sep. 2025
Adjective
  • The attempt was tipped and brought in by Locke, who slipped loose into the secondary before taking off for a 64-yard touchdown reception.
    Brendan Connelly, Boston Herald, 13 Sep. 2025
  • These are organized into geologic map units, which range in composition from loose sand and gravel to very old bedrock.
    David Bressan, Forbes.com, 13 Sep. 2025

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Cite this Entry

“Slack.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/slack. Accessed 19 Sep. 2025.

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