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Synonyms

buckle

American  
[buhk-uhl] / ˈbʌk əl /

noun

  • buckles
    plural
  1. a clasp consisting of a rectangular or curved rim with one or more movable tongues, fixed to one end of a belt or strap, used for fastening to the other end of the same strap or to another strap.

  2. any similar contrivance used for such purposes.

  3. an ornament of metal, beads, etc., of similar appearance.

  4. a bend, bulge, or kink, as in a board or saw blade.


verb (used with object)

  • buckles,
    present (3rd person singular)
  • buckled,
    past participle,  past
  • buckling
    present participle
  1. to fasten with a buckle or buckles.

    Buckle your seat belt.

  2. to shrivel, by applying heat or pressure; bend; curl.

  3. to prepare (oneself ) for action; apply (oneself ) vigorously to something.

  4. to bend, warp, or cause to give way suddenly, as with heat or pressure.

    Synonyms:
    collapse, crumple, twist, bulge, sag

verb (used without object)

  • buckles,
    present (3rd person singular)
  • buckled,
    past participle,  past
  • buckling
    present participle
  1. to close or fasten with a buckle.

    Grandmother always wore shoes that buckled.

  2. to prepare oneself or apply oneself.

    The student buckled to the lesson.

  3. to bend, warp, bulge, or collapse.

    The bridge buckled in the storm.

  4. to yield, surrender, or give way to another (often followed byunder ).

    She refused to take the medicine, but buckled under when the doctor told her to.

verb phrase

  1. buckle up to fasten one's belt, seat belt, or buckles.

    She won't start the car until we've all buckled up.

  2. buckle down to set to work with vigor; concentrate on one's work.

    He was by nature a daydreamer and found it hard to buckle down.

buckle British  
/ ˈbʌkəl /

noun

  1. a clasp for fastening together two loose ends, esp of a belt or strap, usually consisting of a frame with an attached movable prong

  2. an ornamental representation of a buckle, as on a shoe

  3. a kink, bulge, or other distortion

    a buckle in a railway track

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

verb

  1. to fasten or be fastened with a buckle

  2. to bend or cause to bend out of shape, esp as a result of pressure or heat

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Derived Forms

Inflected Forms

Nouns

Participles

Conjugated Forms

Present

Past

Future

Etymology

Origin of buckle

1300–50; Middle English bocle < Anglo-French bo ( u ) cle, bucle < Latin buc ( c ) ula cheekpiece (of a helmet), strip of wood, etc., resembling a cheekpiece, equivalent to bucc ( a ) cheek + -ula -ule

Explanation

A buckle is a clasp or fastener, such as the one on the end of a belt. In the old days, not only belts but also shoes had buckles. When you fasten your belt buckle, you can say you buckle it — you also buckle your seat belt and buckle a kid's bike helmet under his chin. When the ground buckles during an earthquake, it folds or bends out of shape, and when your knees buckle, you could fall. You might also buckle under pressure or stress. The Latin root word is buccula, "cheek strap of a helmet."

Keep Reading on Vocabulary.com

Vocabulary lists containing buckle

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

While some enjoyed the sunshine, the heat caused trains, schools and emergency services to buckle.

From BBC Jul. 22, 2026

"Time for us all to buckle up and get ready for the ride," said director of cricket Rob Key when McCullum was appointed.

From BBC Jul. 12, 2026

Some of that extra weight was what caused the steel beams to buckle, Nathan Berman, managing principal and founder of MetroLoft, told The Wall Street Journal on Tuesday.

From The Wall Street Journal Jul. 9, 2026

This approach enabled us to create a material that can bend, buckle, or stiffen differently under slow movements versus sudden impacts -- without electronics, sensors, or active control.

From Science Daily Jun. 11, 2026

Her knees threatened to buckle as she reached the stairs and made a last-ditch attempt to stay upright.

From "Night Owls" by A.R. Vishny

“We need more cowboy hats and belt buckles in Washington,” he wrote in a campaign post on July 15.

From Slate Jul. 23, 2026

“Your buckles should face not left, not right, but straight ahead.”

From The Wall Street Journal Nov. 14, 2025

He trains hard, mentally prepares himself and still buckles to fear.

From Salon Aug. 24, 2025

Other technology, like 3D printers, have made it possible to re-create items like vintage belt buckles that prove impossible to find.

From Los Angeles Times Feb. 13, 2025

“Get your pillow, Moose,” he said, snapping the buckles on my suitcase.

From "Al Capone Does My Shirts" by Gennifer Choldenko

Richard Wilcock, Rail Magazine industry editor, said it was hard to know the cause without speculating, but photographs appeared to show "clearly a buckled track".

From BBC Aug. 14, 2026

I had only ever seen him on Zoom, and although he was tall, which was nice, I tried not to judge his brown cracked-leather buckled pilgrim shoes paired with high-waist Wrangler jeans.

From Los Angeles Times Aug. 7, 2026

Elsewhere, vehicles on a two-lane road were seen carefully navigating sections of buckled pavement.

From Barron's Jul. 29, 2026

The sky was the limit for turning offices into apartments – until some columns buckled.

From MarketWatch Jul. 17, 2026

My legs buckled beneath me, and the floor rose up to meet me at a sickening speed.

From "The City Beautiful" by Aden Polydoros

The leak wasn’t visible to the eye: They realized there was a problem when the floors started buckling.

From MarketWatch Aug. 1, 2026

Video from inside the building shows the buckling beam.

From BBC Jul. 8, 2026

The war has taken a significant toll on an economy already buckling under runaway inflation—which hit 88.6% year-on-year in June—a weakened currency and years of compounding international isolation.

From The Wall Street Journal Jun. 29, 2026

Ukraine's energy network, already pummelled by Russian attacks over more than four years of war, was buckling under the high temperatures on Monday.

From Barron's Jun. 29, 2026

She kept his gaze when she moved her other hand beneath her chest, and bit down on the scream of pain as she pushed upward, her shoulder nearly buckling.

From "Throne of Glass" by Sarah J. Maas

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