as in to quiet (down)
to stop talking
the schoolboy ordered his mates to belt up about the prank
Synonyms & Similar Words
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Antonyms & Near Antonyms
Example Sentences
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Recent Examples of belt up
In my testing, the Rucker 4.0 was comfortable without its hip belt up to around 30 pounds.
—
Ian Graber-Stiehl, Outside, 5 Dec. 2025
The evening’s co-main event bout between Raymond Ford and Thomas Mattice also has a belt up for grabs.
—Trent Reinsmith, Forbes.com, 9 Apr. 2025
Going back home Sunday looks nice, except for the Lake Effect Snow belt up in New York, Pennsylvania and Michigan.
—Amanda Castro, Newsweek, 26 Nov. 2024
So getting some of those at-bats under his belt up here will be part of that.
—Nick Piecoro, The Arizona Republic, 28 Aug. 2022
Canelo Alvarez of Mexico (57-1-2, 39 KOs) steps back into the ring to try and conquer yet another weight class, this time putting on several pounds for a matchup against current WBA light heavyweight champion Dmitry Bivol of Russia (19-0, 11 KOs) who is putting his belt up for grabs in this bout.
—oregonlive, 7 May 2022
Designed to attach to a belt up to 2½ inches wide or to a PALS system, the pouch comes very close to duplicating the performance of an OWB holster.
—Mike Dickerson, Outdoor Life, 23 Oct. 2020
Ian Graber-Stiehl, Outside, 5 Dec. 2025
The evening’s co-main event bout between Raymond Ford and Thomas Mattice also has a belt up for grabs.
—Trent Reinsmith, Forbes.com, 9 Apr. 2025
Going back home Sunday looks nice, except for the Lake Effect Snow belt up in New York, Pennsylvania and Michigan.
—Amanda Castro, Newsweek, 26 Nov. 2024
So getting some of those at-bats under his belt up here will be part of that.
—Nick Piecoro, The Arizona Republic, 28 Aug. 2022
Canelo Alvarez of Mexico (57-1-2, 39 KOs) steps back into the ring to try and conquer yet another weight class, this time putting on several pounds for a matchup against current WBA light heavyweight champion Dmitry Bivol of Russia (19-0, 11 KOs) who is putting his belt up for grabs in this bout.
—oregonlive, 7 May 2022
Designed to attach to a belt up to 2½ inches wide or to a PALS system, the pouch comes very close to duplicating the performance of an OWB holster.
—Mike Dickerson, Outdoor Life, 23 Oct. 2020
Recent Examples of Synonyms for belt up
Verb
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Liquidity dries up even as the underlying business often becomes more focused and better incentivized.—
Jim Osman,
Forbes.com,
26 Jan. 2026
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Homeless outreach, behavioral health, addiction treatment, and housing support resources are increasingly at risk as government funding dries up, Anglea said.—
Phil Diehl,
San Diego Union-Tribune,
26 Jan. 2026
Verb
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Between the red carpet and your For You Page, there’s no shortage of inspiration if your 2016 self won’t shut up about getting a new piece.—
Marianne Mychaskiw,
Allure,
24 Jan. 2026
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Alfred Williams had yelled at Azari, who was dressed in a onesie, to shut up, Ronie Williams recalled.—
Emerson Clarridge,
Fort Worth Star-Telegram,
22 Jan. 2026
Verb
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The famously outgoing media personality clammed up, on air and off, thanks to a terrifying stranger.—
Ross Raihala,
Twin Cities,
7 Dec. 2025
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Then, after Austin Jackson sustained his season-ending knee injury in early November in Miami’s loss to the Bills , the Dolphins run game clammed up.—
Omar Kelly,
Miami Herald,
29 July 2025
Verb
-
Immediately, his teacher hushed him.—
Sana Noor Haq,
CNN Money,
23 Jan. 2026
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Egregiously, Michelin stars were never meant for taco stands — not in the modern era when the guide’s definition of greatness has so often meant white tablecloths, hushed dining rooms and pricey tasting menus.—
Brock Keeling,
Oc Register,
15 Jan. 2026
Cite this Entry
“Belt up.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/belt%20up. Accessed 31 Jan. 2026.
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