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

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms

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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Antonyms & Near Antonyms

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

Perez first won the job in 2000 thanks to the audacious promise to take Portuguese star Luis Figo from arch-rivals Barcelona. —

Dermot Corrigan, New York Times, 24 May 2026 Hundreds of shoppers gave them a five-star rating, with many praising their helpful arch support. —

Jacquelyn McGilvray, PEOPLE, 23 May 2026

Noun

Across the street was a sandstone mosque, with pointed arches, built in 1887. —

Rania Abouzeid, New Yorker, 21 May 2026 Trump’s arch would fill a traffic circle between the west side of Memorial Bridge and Arlington National Cemetery, and form a sight line with the Lincoln Memorial. —

Tyler Green, The Atlantic, 21 May 2026

Verb

When Sarah’s eyes moved from the map to the paper piling up in my writing nook marked with the chicken scratchings of a madman, her eyebrows arched to the highest point eyebrows can arch. —

Literary Hub, 18 May 2026 The protective netting that arches over so many of the roads in the eastern Donbas region – stopping drones in their tracks – is not your friend here, but a limitation on movement. —

Nick Paton Walsh, CNN Money, 18 May 2026 See All Example Sentences for arch

Recent Examples of Synonyms for arch

Adjective

This bag has an enormous main compartment that can hold bulky clothing items, a laptop compartment that keeps electronics tidy and folds down flat for easy packing, and multiple front-access pockets packed with slots of all shapes and sizes.

— Olivia Young, Travel + Leisure, 24 May 2026
This live service push has been nothing short of a disaster with its main bright spot being a game not even made by a Sony studio.

— Paul Tassi, Forbes.com, 23 May 2026