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 The following year, researchers excavated a set of about 12 footprints that appeared to walk in a line, then found another set of footprints running perpendicular. Evan Bush, NBC News, 28 Nov. 2024 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 As the vernal equinox approaches on March 20, Earth’s axis is perpendicular to the sun. Jamie Carter, Forbes, 12 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
  • If there are grid lines on your windows, Weidenbaum recommends going with the horizontal line that lands closest to the vertical halfway point.
    Lauren Thomann, Better Homes & Gardens, 25 May 2025
  • Ateliers Horizons has dabbled in sound before, developing a first jukebox in 2019, as well as a boombox housing a vertical turntable.
    Joelle Diderich, Footwear News, 24 May 2025
Adjective
  • To now have the very same industry embrace her, including via a recent standing ovation at the Critics Choice Awards for her work in Matlock, has been a lot to process.
    Jessica Wang, EW.com, 27 May 2025
  • That’s right, festival season means one thing and one thing only: measuring the standing ovations each film gets and then using that as data point No. 1 in building your MFL team come September.
    Bethy Squires, Vulture, 15 May 2025
Adjective
  • Carlin said, as soldiers need to guide their horses while keeping erect posture.
    Tom Vanden Brook, USA Today, 27 May 2025
  • In the proceeding years, visitors who wanted to spend the night in the park could rent houseboats, erect tents, or park their camper vans or RVs, but the nearest hotel was located about an hour away in Florida City.
    Mariette Williams, Travel + Leisure, 16 Apr. 2025

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Cite this Entry

“Perpendicular.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/perpendicular. Accessed 6 Jun. 2025.

More from Merriam-Webster on perpendicular

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