undulate

Synonym Chooser

How does the verb undulate differ from other similar words?

Some common synonyms of undulate are fluctuate, oscillate, sway, swing, vibrate, and waver. While all these words mean "to move from one direction to its opposite," undulate suggests a gentle wavelike motion.

an undulating sea of grass

When is fluctuate a more appropriate choice than undulate?

While in some cases nearly identical to undulate, fluctuate suggests constant irregular changes of level, intensity, or value.

fluctuating interest rates

Where would oscillate be a reasonable alternative to undulate?

The words oscillate and undulate can be used in similar contexts, but oscillate stresses a usually regular alternation of direction.

an oscillating fan

When can sway be used instead of undulate?

While the synonyms sway and undulate are close in meaning, sway implies a slow swinging or teetering movement.

trees swaying in the breeze

When might swing be a better fit than undulate?

Although the words swing and undulate have much in common, swing implies a movement of something attached at one end or one side.

the door suddenly swung open

When would vibrate be a good substitute for undulate?

The meanings of vibrate and undulate largely overlap; however, vibrate suggests the rapid oscillation of an elastic body under stress or impact.

the vibrating strings of a piano

When is it sensible to use waver instead of undulate?

In some situations, the words waver and undulate are roughly equivalent. However, waver stresses irregular motion suggestive of reeling or tottering.

the exhausted runner wavered before collapsing

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 undulate That’s about to change with the establishment of the Pocket Peak AVA—a wine-growing region within the valley defined by its steep, undulating hills and volcanic and gravelly loam soils—expected in fall 2025. Shannon McMahon, Condé Nast Traveler, 16 Dec. 2024 Kuma designed a 100-meter-long canopy with an undulating ceramic roof, inspired by traditional Japanese architecture. Lee Sharrock, Forbes, 27 Feb. 2025 At the sight of the beautiful low-angle glade covered in undulating powder, the Rogers duo looked equally excited and apprehensive. David Goodman, New York Times, 25 Feb. 2025 Sheets of undulating snow led into gently lapping Arctic waves. Akash Kapur, Travel + Leisure, 24 Feb. 2025 See All Example Sentences for undulate
Recent Examples of Synonyms for undulate
Verb
  • If oscillating toothbrushes feel too intense on your gums, the Philips Sonicare 4100 Electric Toothbrush is a gentler powerhouse.
    Simon Hill, Wired News, 31 Mar. 2025
  • These were: P-waves, which oscillate back and forth similar to how a sound wave propagates; S-waves which oscillate up and down, perpendicular to the direction of travel; and surface waves, which travel along the surface of Mars similar to ripples in a pond.
    Keith Cooper, Space.com, 17 Mar. 2025
Verb
  • In the wake of the administration’s fluctuating messaging on tariffs, chip manufacturers are finding themselves in a tight spot ahead of key earnings reports.
    Miranda Nazzaro, The Hill, 17 Apr. 2025
  • Case numbers seesawed in the following years before reaching an all-time low in 2021, when Pakistan recorded only one infection Although cases have fluctuated in the past, experts say last year's increase was particularly alarming.
    Ruchi Kumar, NPR, 16 Apr. 2025
Verb
  • Counter-protesters posted up on street corners outside the college campus, waving pro-Trump flags and gathering signatures for the latest effort to recall Gov. Gavin Newsom from office.
    Nicole Nixon, Sacbee.com, 16 Apr. 2025
  • Shoji Kawamori ran up on stage, waving the master tape with a fair degree of jubilation.
    Ollie Barder, Forbes.com, 15 Apr. 2025
Verb
  • The Chinese and Hong Kong flags flutter as screens display the Hang Seng Index outside the Exchange Square complex, which houses the Hong Kong Stock Exchange, on January 21, 2021 in Hong Kong, China.
    Lee Ying Shan, CNBC, 31 Mar. 2025
  • Romantic connections will sweeten up by April 30 regardless, as your amorous ruler Venus finally flutters back into your relationship sector, softening your heart to the healing magic of love.
    Nina Kahn, StyleCaster, 24 Mar. 2025
Verb
  • Why could not the engineers simply have made the device vibrate and/or light up when locking the door?
    Judith Martin, Mercury News, 3 Apr. 2025
  • As news that Williams had been apprehended spread, Dahl’s phone started vibrating with texts from friends.
    Ronan Farrow, The New Yorker, 24 Mar. 2025
Verb
  • The United States Geological Survey reports that light shaking could be felt as far southeast as Bursa, which is approximately 97 miles south of Istanbul.
    Gabe Hauari, USA Today, 23 Apr. 2025
  • In 2023, Turkey experienced one of the world's most deadly quakes, a 7.8 magnitude event that shook southern Turkey and northern Syria, killing more than 55,000 people.
    Ross Rosenfeld, MSNBC Newsweek, 23 Apr. 2025
Verb
  • The Danish and Swedish customers appear to take a Proustian pleasure, all smiles in the flickering firelight.
    Ann Abel, Forbes.com, 16 Apr. 2025
  • The offense didn’t flicker in Mariota’s appearances.
    Ben Standig, New York Times, 11 Apr. 2025
Verb
  • When Woods’ teammate Tom Kim turned his back on a chip-in, tossing his club in celebration, oblivious to the fact that his ball had lipped out, Woods was convulsed with laughter.
    Don Riddell, CNN, 24 Mar. 2025
  • The lawsuit also claims that, while Gallegos was actively convulsing and bleeding on the bar’s floor, Perez and Stakley pointed their guns at him, threatened to shoot him, kicked him and stomped on his back Gallegos was arrested that night and charged with obstructing a police officer.
    Lauren Penington, The Denver Post, 27 Jan. 2025

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Cite this Entry

“Undulate.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/undulate. Accessed 29 Apr. 2025.

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