undulate

Definition of undulatenext

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 Miller also strategically employs the Pietà in his Confederate Women’s Monument, turning to Michelangelo’s later Depositional group from the Pietà Bandini, in which the dead Christ is not draped on Mary’s lap and knees but undulates across the bodies of his earthbound beloveds. Horace D. Ballard, Artforum, 22 Apr. 2026 The Tree House Suites’ undulating design resembles the seedpod of the purple millettia, a common Southeast Asian flowering plant. Travel + Leisure Editors, Travel + Leisure, 15 Apr. 2026 Toyo Ito’s 2006 Meiso no Mori Funeral Hall in Gifu, Japan, shelters mourners beneath an undulating thin-concrete canopy like a billowing shroud. Justin Davidson, Curbed, 14 Apr. 2026 In place of drums is a constant floor of undulating synth bass, which sometimes twists itself into the treble range but mostly functions as the x-axis to the percussion’s y in the vast lattice structure that supports this music. Daniel Bromfield, Pitchfork, 9 Apr. 2026 See All Example Sentences for undulate
Recent Examples of Synonyms for undulate
Verb
  • The sphere at the top of the node bobs in the water, with the attached tube oscillating water within it, spinning turbines inside the structure that generate electricity.
    Sasha Rogelberg, Fortune, 14 May 2026
  • Yields on 20- and 30-year gilts, which are hovering around their highest levels since 1998, oscillated around the flatline on Wednesday afternoon.
    Chloe Taylor,Joseph Wilkins, CNBC, 13 May 2026
Verb
  • The full-zip sweatshirt makes this Xieerduo set especially practical for layering—perfect over a tee or tank on travel days when temperatures can fluctuate.
    Lauren Dana Ellman, Travel + Leisure, 16 May 2026
  • These bottlenecks slow decision-making in a crisis, when every second counts to maintain supply continuity and manage fluctuating costs.
    Alex Saric, Forbes.com, 15 May 2026
Verb
  • McCollum stopped and waved the vehicle on.
    Kansas City Star, Kansas City Star, 11 May 2026
  • The decision by Blake Lively and Justin Baldoni’s camps to wave their white flags stunned gossip hounds captivated by their blockbuster legal battle, which left no shortage of reputational casualties for both.
    Jami Ganz, New York Daily News, 9 May 2026
Verb
  • Elke and Alysia started seeing the big bugs fluttering around in late April, and as their numbers grew through early May, the native rainbows started keying in on them more and more.
    Dac Collins, Outdoor Life, 14 May 2026
  • No one enjoys finding moths fluttering around the flour or tiny caterpillars crawling in the cereal.
    Lauren Wicks, Southern Living, 13 May 2026
Verb
  • Days after the shooting stunned Shreveport, a whirlwind of police lights, camera crews and grieving relatives swarmed the neighborhood where the killings unfolded, the streets vibrating with sirens, the air shrouded in questions and disbelief.
    Alaa Elassar, CNN Money, 10 May 2026
  • Then the controllers tried vibrating the drill to knock the rock loose and had no luck.
    Adam Kovac, Scientific American, 7 May 2026
Verb
  • Players were visibly shaken, as were many in the stands, as medical staff from both teams and EMS placed him on a stretcher and carted him off the field.
    Ryan Morik, FOXNews.com, 15 May 2026
  • Rinse under cold water 1 minute, shaking to ensure a thorough rinse.
    Midwest Living, Midwest Living, 15 May 2026
Verb
  • Not far from where the two sat, a customer service light flickered on and off, but no employees manned the help desk.
    Audrey Pachuta, Chicago Tribune, 9 May 2026
  • As the road cut through a jagged pitch of mountains on the 30-minute drive from Figari South Corsica airport, rhythmic flashes of the glittering sea and lush, wild terrain flickered at every turn.
    Rebekah Peppler, Travel + Leisure, 9 May 2026
Verb
  • When Pinatubo started convulsing and belching steam in April of that year, scientists from the United States and the Philippines deployed an array of instruments that tracked the volcano’s inner tumult.
    Quanta Magazine, Quanta Magazine, 8 May 2026
  • The internet convulsed—numerous edits to Jackson’s Wikipedia page overwhelmed the site—as millions of us reached for something to explain our loss.
    Steven Gray, Time, 29 Apr. 2026

Browse Nearby Words

Podcast

Cite this Entry

“Undulate.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/undulate. Accessed 16 May. 2026.

More from Merriam-Webster on undulate

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster