dilate

Synonym Chooser

How does the verb dilate differ from other similar words?

Some common synonyms of dilate are amplify, distend, expand, inflate, and swell. While all these words mean "to increase in size or volume," dilate applies especially to expansion of circumference.

dilated pupils

When is amplify a more appropriate choice than dilate?

In some situations, the words amplify and dilate are roughly equivalent. However, amplify implies the extension or enlargement of something inadequate.

amplify the statement with details

When can distend be used instead of dilate?

The words distend and dilate are synonyms, but do differ in nuance. Specifically, distend implies outward extension caused by pressure from within.

a distended abdomen

Where would expand be a reasonable alternative to dilate?

Although the words expand and dilate have much in common, expand may apply regardless of the manner of increase (such as growth, unfolding, addition of parts).

a business that expands every year

When is it sensible to use inflate instead of dilate?

The synonyms inflate and dilate are sometimes interchangeable, but inflate implies expanding by introduction of air or something insubstantial and suggests a vulnerability to sudden collapse.

an inflated ego

When would swell be a good substitute for dilate?

The words swell and dilate can be used in similar contexts, but swell implies gradual expansion beyond a thing's original or normal limits.

the bureaucracy swelled to unmanageable proportions

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 dilate As the images progress, the left pupil shrinks to a narrow black speck while the right eye remains normally dilated, giving the feline an unmistakably lopsided expression. Melissa Fleur Afshar, MSNBC Newsweek, 2 Sep. 2025 Amlodipine Amlodipine is used to treat high blood pressure by blocking the entry of calcium into the blood vessels, which dilates them and reduces blood pressure. Mira Miller, Verywell Health, 25 Aug. 2025 Upon examination, the patient's eyes were bloodshot and his pupil was fixed and dilated. Sabienna Bowman, People.com, 21 Aug. 2025 In dim light, cat pupils dilate into circles, humanizing their eyes. Tao Lin, Harpers Magazine, 20 Aug. 2025 See All Example Sentences for dilate
Recent Examples of Synonyms for dilate
Verb
  • Their belly will appear distended during the last 20 days of pregnancy, and their breast tissue will also be noticeably swollen.
    Maria Azzurra Volpe, MSNBC Newsweek, 30 Oct. 2025
  • The fear grew when her 1-year-old boy's belly started to distend and his ribs were pressed against his skin.
    Brad Schmitt, Nashville Tennessean, 19 Oct. 2025
Verb
  • Engineers at Ames inflate these enormous canopies inside the wind tunnel under simulated flight conditions, observing how the materials stretch, oscillate, and deploy.
    Kaif Shaikh, Interesting Engineering, 30 Oct. 2025
  • The lobes of the Red Spider Nebula are three light-years long each, inflated by gas from the central star shooting outward for thousands of years.
    Monisha Ravisetti, Space.com, 30 Oct. 2025
Verb
  • Wild news in the Financial Times this morning, which reports that China has substantially increased energy subsidies for some of its largest data centers in a bid to bolster its position in the global AI race.
    Andrew Nusca, Fortune, 4 Nov. 2025
  • Rising prices for cars, parts and repairs needed, and medical bills have increased, driving up the price of insurance.
    NPR, NPR, 3 Nov. 2025
Verb
  • Created in partnership with the bionic footwear and apparel brand Dephy, the next-gen design is engineered to augment natural lower-leg and ankle movement, providing extra power for everyday exercise.
    Rachel Cormack, Robb Report, 24 Oct. 2025
  • Queen Camilla augmented her monochrome attire with sheer black tights and a pair of Eliot Zed black suede pumps with a leather toe cap.
    Julia Teti, Footwear News, 23 Oct. 2025
Verb
  • In addition to WeRide and Pony AI, Baidu is also expanding its robotaxi offerings through its Apollo Go vehicles.
    Sydney Lake, Fortune, 6 Nov. 2025
  • That includes a new and robust collaboration with Brazil’s federal government and 22 of its states—including Pará—to expand cooperation on climate action.
    MSNBC Newsweek, MSNBC Newsweek, 6 Nov. 2025
Verb
  • The signage was also updated to better call out the categories in the store, fitting rooms were enlarged and different materials were used to create a more immersive experience, the retailer said.
    Jean E. Palmieri, Footwear News, 31 Oct. 2025
  • Making both tokens more easily accessible for American investors is likely to increase their value by enlarging the pool of potential buyers.
    Josh Meyer, USA Today, 31 Oct. 2025
Verb
  • She was rushed to a local hospital in critical condition and underwent emergency surgery, during which doctors removed part of her skull to relieve swelling.
    Michael Dorgan, FOXNews.com, 25 Oct. 2025
  • Venezuela’s armed forces comprise roughly 109,000 active personnel, but the total number swells when paramilitary and reserve units are included.
    Amanda Castro, MSNBC Newsweek, 24 Oct. 2025
Verb
  • The open-source project has been used by millions of scientists in more than 190 countries, accelerating research into diseases previously considered intractable.
    Dave Smith, Fortune, 26 Oct. 2025
  • Southern China’s tropical to subtropical climate – with heavy rainfall, heat, and humidity – accelerates chemical weathering, while the region’s long history of tectonic and magmatic activity adds further erosion.
    Bojan Stojkovski, Interesting Engineering, 25 Oct. 2025

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Cite this Entry

“Dilate.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/dilate. Accessed 6 Nov. 2025.

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