slack 1 of 3

1
2
3

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
Fernandes has no right to seize upon a slack backpass and lob Kelleher from about 40 yards out. Carl Anka, The Athletic, 7 Apr. 2024 But, as our offices become more mobile, and our tether to a single home base becomes increasingly slack, these rules have changed. Zachary Weiss, Vogue, 21 Oct. 2024
Noun
United’s surgical entrance and exit to and from Asia reflected an acknowledgement by executives that there could be no excess slack to timelines. Laurie Whitwell, New York Times, 31 May 2025 Systems re-route, and other veins will pick up the slack. Laura Neilson, Vogue, 30 May 2025
Verb
Munn, 44, caught both slack and praise from social media followers after sharing a series of photos of her 3-year-old son, Malcolm, walking down the street in New York City without shoes. Tracy Wright, FOXNews.com, 28 Apr. 2025 After a few months, that arrangement collapsed — the woman accused Pope of slacking and damaging her property — and Pope went to stay with friends, back in Houston, sleeping in a van on their property. Ian Frisch, Curbed, 9 Jan. 2025 See All Example Sentences for slack
Recent Examples of Synonyms for slack
Adjective
  • Summer in New Jersey means long, lazy days at its famous beaches.
    Rachel Chang, AFAR Media, 2 June 2025
  • Dresses should feel effortless but not lazy, and easy to wear all day.
    Kelsey Glennon, Travel + Leisure, 31 May 2025
Adjective
  • Everything has to be centred on them, perhaps with a flexible back three with three attacking midfielders: Havertz as a false nine, Musiala half left, Wirtz half right.
    Philipp Lahm, New York Times, 6 June 2025
  • This strategy is designed to capture recurring income through flexible consumption models that effortlessly connect on-premises with cloud environments.
    Trefis Team, Forbes.com, 5 June 2025
Noun
  • Researchers analyzed more than 50 avian fossils unearthed in northern Alaska—including bones from embryos and hatchlings—and found evidence that birds have been nesting at Arctic latitudes since at least 73 million years ago, during the Cretaceous period.
    Sara Hashemi, Smithsonian Magazine, 2 June 2025
  • The possibility of displays of the aurora borealis at more southerly latitudes comes from a spike in solar activity, which is currently at a 23-year high due to the current solar maximum period.
    Jamie Carter, Forbes.com, 2 June 2025
Verb
  • The ruling Wednesday evening marked the latest setback for Apple in its long-running legal battle with Epic Games, which first sued the iPhone maker in 2020 in an attempt to force Apple to loosen its grip on purchases in apps that utilize its iOS operating system.
    Morgan Chittum, CNBC, 5 June 2025
  • Stir in chicken stock and wine, scraping bottom of pan to loosen any browned bits.
    Ann Taylor Pittman, Southern Living, 5 June 2025
Adjective
  • State troopers cited the truck driver who caused the crash, a 57-year-old Texas man, for careless driving causing injury, according to the agency.
    Katie Langford, Denver Post, 7 June 2025
  • Edmund Richard Hartley, 31, the yacht captain towing Adler and another girl, was charged with four counts of careless boating, including one count for not having a lookout to keep an eye on the girls.
    David Goodhue, Miami Herald, 3 June 2025
Adjective
  • After an afternoon strolling through Historic Georgetown, come back to the hotel for a quick change and a pre-dinner drink at Eliza’s, the relaxed, open-air waterfront bar at the back of the property.
    Lydia Mansel, Southern Living, 7 June 2025
  • The garden level features a private patio with an outdoor kitchenette, while sliding glass doors connect a relaxed seating area off the home’s secondary kitchen to a rear garden with a mudroom and bike storage.
    Abby Montanez, Robb Report, 6 June 2025
Adjective
  • For all his reputation as an annoyingly committed actor, Norton feels so loose and playful with Anderson.
    Joe Reid, Vulture, 12 June 2025
  • Secure loose outdoor items and adjust plans as necessary so you're not caught outside.
    CA Weather Bot, Sacbee.com, 12 June 2025
Noun
  • Give ample space to large vehicles - Trucks or buses can create a water spray that diminishes visibility.
    NC Weather Bot, Charlotte Observer, 14 June 2025
  • Riz Ahmed is carving out a niche in the action-thriller space.
    Samantha Bergeson, IndieWire, 13 June 2025

Browse Nearby Words

Cite this Entry

“Slack.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/slack. Accessed 17 Jun. 2025.

More from Merriam-Webster on slack

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!