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
  • This one falls in the medium-firm category for support with just enough give to keep me comfortable, and as a person who oscillates between being too hot and too cold, the temperature regulation from season to season helps a lot.
    Nashia Baker, Architectural Digest, 13 June 2025
  • Diddy also appeared to be oscillating ever so slightly in his chair; his back and head were moving with the almost imperceptible back-and-forth that comes with leg-tapping.
    Victoria Bekiempis, Vulture, 9 June 2025
Verb
  • What Happens Next Trump's approval rating could fluctuate in the coming weeks, depending on the evolving tariff situation and concerns about a recession.
    Martha McHardy, MSNBC Newsweek, 4 June 2025
  • Optimum Nutrition Whey Protein Powder (5 Pounds) for $74 ($14 off) Amazon The best protein powder fluctuates in price often, but many different flavors and serving sizes are on sale right now.
    Louryn Strampe, Wired News, 3 June 2025
Verb
  • Many of the supporters, who included a 12-year-old girl dressed as the president, donned pro-Trump t-shirts and other attire, waving American flags to catch the attention of passersby, some of whom slammed on their horns in solidarity.
    Shanzeh Ahmad, Chicago Tribune, 1 June 2025
  • In February, during an appearance at the Conservative Political Action Conference, Musk displayed his penchant for slashing government spending by waving around a chainsaw on stage.
    Rebecca Schneid, Time, 29 May 2025
Verb
  • On a 13-foot-tall wall almost 40 feet across, a kaleidoscope of metal butterflies are now in flight, fluttering around a centerpiece painting on aluminum metal.
    Karen Billing, San Diego Union-Tribune, 3 June 2025
  • On an interior mural, a lac bird flutters its wings.
    Jenna Thompson, Kansas City Star, 23 May 2025
Verb
  • The males climb up trees and produce their shrill songs en masse, using muscles to vibrate a rigid part of their exoskeletons called tymbals.
    Jack Knudson, Discover Magazine, 30 May 2025
  • The green earth below the stone seems to vibrate with Dorian’s physical presence.
    Jayson Greene, Vulture, 30 May 2025
Verb
  • Carnal, with care – Jis shook the bedrock of the cordial, conservative Guadalajara community with filth, camp and candor.
    Holly Jones, Variety, 9 June 2025
  • Some shook their legs nervously, others gave death glares to folks with the misfortune of sitting on creaky chairs.
    Omkar Khandekar, NPR, 8 June 2025
Verb
  • Complicating matters is his recent diagnosis of dementia, and how his memory seems to flicker on and off.
    Sarah Lyall, New York Times, 1 June 2025
  • 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
Verb
  • The students fell ill within minutes of eating rice and potato curry, vomiting and convulsing with stomach cramps.
    Peter Guo, NBC news, 2 May 2025
  • Then, as the global economy convulsed after the trauma of World War I, British economist John Maynard Keynes set this belief on its head.
    Edward Lotterman, Twin Cities, 13 Apr. 2025

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Cite this Entry

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

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