Synonym Chooser

How does the adjective perpendicular differ from other similar words?

The words plumb and vertical are common synonyms of perpendicular. While all three words mean "being at right angles to a base line," perpendicular may stress the straightness of a line making a right angle with any other line, not necessarily a horizontal one.

the parallel bars are perpendicular to the support posts

When is plumb a more appropriate choice than perpendicular?

While in some cases nearly identical to perpendicular, plumb stresses an exact verticality determined (as with a plumb line) by earth's gravity.

make sure that the wall is plumb

When is it sensible to use vertical instead of perpendicular?

While the synonyms vertical and perpendicular are close in meaning, vertical suggests a line or direction rising straight upward toward a zenith.

the side of the cliff is almost vertical

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 perpendicular This magnetic field is parallel to the outflows that form LBN 483, but perpendicular to the inflow of material falling onto the two stars. Keith Cooper, Space.com, 16 Mar. 2025 As the vernal equinox approaches on March 20, Earth’s axis is perpendicular to the sun. Jamie Carter, Forbes, 12 Mar. 2025 Longer wavelengths materialize on Earth when sunlight hits from more of a perpendicular angle, so its route through our atmosphere can be more extensive. Emily Mae Czachor, CBS News, 13 Mar. 2025 Slide the cutting edge of your scissors perpendicular across the raw edge. Cody Godwin, USA TODAY, 4 Mar. 2025 See All Example Sentences for perpendicular
Recent Examples of Synonyms for perpendicular
Adjective
  • Maintenance cleans include dusting, vacuuming, and mopping, cleaning of horizontal surfaces, and spot-cleaning of vertical surfaces such as walls and cabinet fronts.
    Abby Wolner, Better Homes & Gardens, 19 Apr. 2025
  • Adorn a retaining wall with a vertical planter Hang vibrant bucket planters to dress up an ordinary retaining wall.
    Katherine McLaughlin, Architectural Digest, 18 Apr. 2025
Adjective
  • Abrego García, 29, was deported on March 15 despite a standing immigration court ruling from 2019 barring his removal to El Salvador due to credible threats from gangs targeting his family’s pupusa business.
    Nik Popli, Time, 11 Apr. 2025
  • Read Next World Local’s theory about ancient standing stone in UK forest turns out to be true.
    Aspen Pflughoeft, Miami Herald, 2 Apr. 2025
Adjective
  • Rich and poor kids alike would put on hardhats and erect skyscrapers or build dams.
    Gideon Lewis-Kraus, The New Yorker, 19 Feb. 2025
  • Their presence made for a refreshing break from the usual barricade that luxury hotels erect between locals and guests.
    Michael Snyder, Travel + Leisure, 15 Jan. 2025

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Cite this Entry

“Perpendicular.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/perpendicular. Accessed 22 Apr. 2025.

More from Merriam-Webster on perpendicular

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