Definition of perpendicularnext

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 By changing the orientations of the bars perpendicular to the waveguide, the team has been able to make the cantilevers curl into helixes. IEEE Spectrum, 9 Apr. 2026 This means that, unlike regular rotors that are stuck perpendicular to their axis of rotation, AERIX T-6 rotors can independently change their direction. Etiido Uko march 30, New Atlas, 30 Mar. 2026 An equinox is when the Earth’s axis is perpendicular to the sun, resulting in nearly equal times of daylight and night. Aj Willingham, AJC.com, 20 Mar. 2026 Franklin, a smaller, two-lane street, runs perpendicular to Belleview. Phaedra Trethan, USA Today, 14 Mar. 2026 See All Example Sentences for perpendicular
Recent Examples of Synonyms for perpendicular
Adjective
  • On the walls hung vertical scrolls of Chinese calligraphy.
    Dan Greene, New Yorker, 18 May 2026
  • Floor maltings still running the traditional way, coopers making barrels on site, a 30-year vertical tasting conducted without theatrics.
    Melinda Sheckells, HollywoodReporter, 18 May 2026
Adjective
  • Maddison received a standing ovation and had an immediate impact.
    Jay Harris, New York Times, 15 May 2026
  • Wild standing ovation for the actor who has had a number of films here over the years.
    Mia Galuppo, HollywoodReporter, 15 May 2026
Adjective
  • The solitary daisy-like golden yellow flowers emerge from slender, erect stems.
    Jamie McIntosh, The Spruce, 5 May 2026
  • The chickens stomp with swift feet like an Irish step dancer, keeping their tails erect and wings drooped.
    Laura Baisas, Popular Science, 29 Apr. 2026

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Cite this Entry

“Perpendicular.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/perpendicular. Accessed 21 May. 2026.

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