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 Consider a morning stroll along Mendocino Trail, which undulates along the continent’s edge for miles, delivering a symphonic show of rolling waves and squawking sea birds, who sing their wild tunes from the top of dramatic rock formations. Chelsee Lowe, Travel + Leisure, 25 Apr. 2025 Pull them back, and an undulating wall of textural sound will come to greet you. Liam Hess, Vogue, 11 Apr. 2025 The technique could also be seen via the hand-cut silk wool cascading petal embroideries that undulated down her new Octavia and Adeline gowns. Emily Mercer, Footwear News, 9 Apr. 2025 The bright and modern-tropical aesthetic continues outdoors to its sculpture garden that unfolds in rounded, undulating curves of palms and jasmine. Kelsey Glennon, Southern Living, 5 Mar. 2025 See All Example Sentences for undulate
Recent Examples of Synonyms for undulate
Verb
  • As the survivors venture out and scramble back, the images oscillate between nervous claustrophobia and eerie, wide-open desolation; between the overly familiar and the radically strange.
    Mike Hale, New York Times, 1 May 2025
  • As a performer, he’s always excelled with high-energy characters who oscillate wildly between high and low status (or sometimes both at the same time).
    Fran Hoepfner, Vulture, 16 Apr. 2025
Verb
  • Even as political power shifted, the climate fluctuated and the wall went up, the apocalypse still hadn’t quite arrived.
    Lizzie Wade, Smithsonian Magazine, 23 May 2025
  • What Happens Next Trump's approval rating could fluctuate in the coming weeks, depending on the outcome of key events, including critical negotiations in the Russia-Ukraine war, the evolving tariff situation and concerns about a recession.
    Martha McHardy, MSNBC Newsweek, 22 May 2025
Verb
  • Identify yourself: Talk calmly and slowly wave your arms.
    Helena Wegner, Sacbee.com, 23 May 2025
  • Rather than crying, the resilient bride smiled and waved at everyone as she was wheeled out of the party on a gurney, where guests gave her a grand exit at the back of the building with wedding sparklers.
    Ashlyn Robinette, People.com, 23 May 2025
Verb
  • Swallows inhabit some of these bluffs, darting after insects that flutter above the water.
    Alann B. Steen, Outdoor Life, 21 May 2025
  • Songbirds cried in the surrounding trees, and the girl’s heart fluttered with unspeakable sadness.
    Lizz Schumer, People.com, 1 May 2025
Verb
  • With an electropop base, an irresistible electric bass groove and enveloping harmonies, the song vibrates between what was and what will no longer be.
    Luisa Calle, Billboard, 23 May 2025
  • The soundtrack is a buffet of rapturous period jazz, some of it silky, some of it vibrating with skittery energy, much like Martial Solal’s score for Breathless itself.
    Stephanie Zacharek, Time, 18 May 2025
Verb
  • In this pool photograph distributed by the Russian state agency Sputnik, Russian President Vladimir Putin (L) shakes hands with North Korea's leader Kim Jong Un (R) after a signing ceremony following their bilateral talks at Kumsusan state residence in Pyongyang, on June 19, 2024.
    Shane Croucher, MSNBC Newsweek, 29 May 2025
  • For me, a perfect beach bag starts with a lightweight, oversized tote that’s easy to shake the sand out of—preferably a mesh or water-resistant style.
    Alesandra Dubin, Travel + Leisure, 28 May 2025
Verb
  • Photograph by Lenne Chai Photograph by Lenne Chai Cat Bite Club As the sun goes down on Chinatown, Monument Lifestyle café turns off its espresso machine and a scarlet Cheshire cat sign flickers awake.
    Adam Erace, Bon Appetit Magazine, 27 May 2025
  • But his stage presence matched the electricity of the light show flickering around him, and the rawness of his energy was certainly attention-getting and more importantly attention-keeping.
    Charlie Mason, TVLine, 19 May 2025
Verb
  • The constable threw her convulsing body over the back of a horse and carted her to county lines.
    Maureen Lee Lenker, EW.com, 13 May 2025
  • Markets immediately began convulsing, and in the days that followed, Trump exempted more than a third of goods coming from Canada until April 2.
    Jennifer Jett, NBC News, 15 Mar. 2025

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Cite this Entry

“Undulate.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/undulate. Accessed 2 Jun. 2025.

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