slack 1 of 3

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2
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slack

2 of 3

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
Levi's Wedgie Straight Jeans, $31 with Prime Aside from a cropped length, which these still have, a straight-leg fit displays your curves in a more slack way. Alyssa Grabinski, People.com, 9 Oct. 2024 Biden’s resting expression of slack confusion was almost as unnerving as his faltering efforts to make a clear and vivid case for his reëlection. The Editors, The New Yorker, 29 Sep. 2024
Noun
Despite SpaceX picking up the national security slack during Vulcan delays, the ULA rocket’s capability is something Space Force personnel have anxiously awaited. Brig. Richard Tribou, The Orlando Sentinel, 26 Mar. 2025 Though the official ratings system hasn’t evolved much this century, online culture has picked up the slack. Brian Truitt, USA Today, 31 Mar. 2025
Verb
Aquarius' Health & Wellness Horoscope in 2025 Don't slack on your well-being, Aquarius! Skyler Caruso, People.com, 23 Dec. 2024 But sales started slacking during the recessions in the early 2000s and never really recovered, Evans said. Jeanette Marantos, Los Angeles Times, 1 Jan. 2025 See All Example Sentences for slack
Recent Examples of Synonyms for slack
Adjective
  • The natural hot springs and spa are favorites among the more mature crowd, and the indoor pool, two-acre water park (complete with waterslide and a lazy river), and lawn games appeal to younger generations.
    Lydia Mansel, Southern Living, 18 Apr. 2025
  • And, being just 20 minutes from Athens’ city center, the hotel is perfectly positioned for both lazy beach days and quick jaunts to the Acropolis.
    Travel + Leisure Editors, Travel + Leisure, 16 Apr. 2025
Adjective
  • Want a new career that’s higher-paying, more flexible or fulfilling?
    Kamaron McNair, CNBC, 18 Apr. 2025
  • The device uses microneedles and flexible wiring to capture neural signals just beneath the skin, enhancing signal quality while minimizing invasiveness.
    Charlie Fink, Forbes.com, 18 Apr. 2025
Noun
  • The times and dates given apply to mid-northern latitudes.
    Jamie Carter, Forbes.com, 7 Apr. 2025
  • Sun Sentinel Tweaks to Florida’s Live Local Act may boost developers’ options but frustrate cities Florida developers could gain more latitude from legislative bills this year that aim to piggyback off the state’s law to increase affordable housing.
    South Florida Sun Sentinel, Sun Sentinel, 4 Apr. 2025
Verb
  • Compliance Gets Hyperlocal There is a tendency when reading headlines about sweeping changes to major regulatory initiatives to look only at the top-line effects — federal regulation is loosening — and the assumption that this will make compliance less burdensome.
    Mary Foley, Forbes.com, 17 Apr. 2025
  • Idaho’s 1-to-6 ratio for infants remains in place, but the ratios were loosened for all older children.
    Rachel Cohen, Vox, 17 Apr. 2025
Adjective
  • Following the accident, the driver, a 61-year-old woman, was cited with careless driving and cooperated with investigators at the scene, the sheriff’s office said.
    Sam Gillette, People.com, 8 Apr. 2025
  • She was cited with careless driving, the sheriff’s office said.
    Mark Price, Miami Herald, 8 Apr. 2025
Adjective
  • The wooden slats are uniform, but rounded edges help create a more relaxed outdoor atmosphere.
    Blake Bakkila, Architectural Digest, 18 Apr. 2025
  • The war isn’t over, but at this writing, mandates have tightened (not relaxed) across major companies like Amazon, AT&T and Boeing.
    Bryan Robinson, Forbes.com, 18 Apr. 2025
Adjective
  • That film was the third in Trier’s loose Oslo trilogy and was co-written with his long-time collaborator Eskil Vogt, who is also a co-writer on Sentimental Value.
    Max Goldbart, Deadline, 10 Apr. 2025
  • Collins went on to join another funk pioneer: George Clinton, whose alternating bands Parliament and Funkadelic were innovating a looser, more improvisational and funnier style that would help define Black music in the ’70s.
    Steve Knopper, Billboard, 9 Apr. 2025
Noun
  • Lance Bass Lance Bass is trained to go into space, but has never made the trip.
    Janelle Ash, FOXNews.com, 14 Apr. 2025
  • However, wind and solar tend to take up a lot of space, which has led to challenges in local approvals for new sites and transmission lines.
    Erin Baker, The Conversation, 14 Apr. 2025

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Cite this Entry

“Slack.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/slack. Accessed 25 Apr. 2025.

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