ARCH Synonyms: 265 Similar and Opposite Words

arch 1 of 3

adjective

as in main

coming before all others in importance since the start of her acting career her parents have steadfastly remained her arch supporters

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Relevance

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as in wise

displaying or marked by rude boldness was so arch as to ask him outright if he was wearing a toupee

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Antonyms & Near Antonyms

as in mischievous

tending to or exhibiting reckless playfulness the arch look on the girl's face betrayed her as the one who had tricked the babysitter into believing that the house was haunted

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arch

2 of 3

noun

ˈärch

as in curvature

something that curves or is curved the limestone arch is a natural formation that is the product of many years of erosion

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arch

3 of 3

verb

as in to bend

to cause to turn away from a straight line the cat arched her back whenever she was stroked

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Antonyms & Near Antonyms

as in to curve

to turn away from a straight line or course the path gradually arches off into the woods

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Antonyms & Near Antonyms

straighten

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 arch

Adjective

Through a combination of buttery-smooth fabric, mighty arch support, impact-absorbing memory foam, and the kind of curved, rocker-like outsole that doles out both traction and momentum on any surface. —

Rudolf Obias, Footwear News, 3 Mar. 2026 The Form Insoles combine mechanical arch support with a neuro-stimulating texture, which is proven to reduce foot fatigue and arch pain by increasing overall foot awareness and foot posture. —

Tory Johnson, ABC News, 2 Mar. 2026

Noun

McDonald’s had to shrink those golden arches. —

Steve Bousquet, Sun Sentinel, 21 Feb. 2026 Tetra Tech began design work in January under the bureau’s direction, developing plans to restore wiring to lighting along the roadway, barriers, ramps, stairways and arches. —

City News Service, Daily News, 18 Feb. 2026

Verb

Under blistering examination from plaintiff’s attorney Mark Lanier, who called him as an adverse witness, the Meta chief looked visibly irritated at times, arching his eyebrows and shifting in his chair as he was confronted with a string of internal emails and slide decks. —

Nancy Dillon, Rolling Stone, 18 Feb. 2026 Growing about two feet tall and three feet wide, its delicate blades arch and flutter in the breeze to great effect. —

Paul Cappiello, Louisville Courier Journal, 13 Feb. 2026 See All Example Sentences for arch

Recent Examples of Synonyms for arch

Adjective

The district’s major facilities overhaul is set to bring freshman students back into Neuqua’s main building starting in 2027, which will free up Birkett to house a number of district programs.

— Molly Morrow, Chicago Tribune, 7 Mar. 2026
Hitting this target should be your main priority in the months ahead.

— Christine Benz, Los Angeles Times, 7 Mar. 2026