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 Princess and Empress pursuing opposite ends of the same story book, their paths perpendicular on Sunset Boulevard. Jeff Weiss, HollywoodReporter, 12 June 2025 While most rifle bores and barrel crowns are perfectly perpendicular, an older or damaged rifle may have some deviation, which would negatively impact the accuracy of the boresight. Bestreviews, Chicago Tribune, 4 June 2025 In 2001, a journalist launched the Political Compass, a tool designed to move beyond such simplifications by adding a social scale perpendicular to the economic one, creating ideological quadrants that have since become a staple of political-science classes. Jon Allsop, New Yorker, 2 May 2025 Dragonflies hold their wings perpendicular to their bodies, while a damselfly’s wings point straight back, parallel to its body. Carl R. Gold, Baltimore Sun, 8 June 2025 See All Example Sentences for perpendicular
Recent Examples of Synonyms for perpendicular
Adjective
  • Amazon says its facility has added 130 jobs on the Space Coast since 2024, and ULA has added to the economic impact as well by building out at second vertical integration facility at SLC 41.
    Richard Tribou, The Orlando Sentinel, 24 July 2025
  • If one looks straight downward from Scorpius one encounters the teapot shape of stars that is Sagittarius; in mid southern latitudes the teapot shape is almost vertical.
    Jesse Emspak, Space.com, 24 July 2025
Adjective
  • The new Champion Golfer of the Year gave another example of his extraordinary superiority in men's professional golf, earning standing ovations from the crowd at Royal Portrush.
    Julio Cesar Valdera Morales, MSNBC Newsweek, 20 July 2025
  • Iran boasts a large standing force but also relies on proxies and undercover operations that have been severely disabled in recent months by U.S. and Israeli actions.
    Christopher Bodeen, Chicago Tribune, 21 June 2025
Adjective
  • The guardians stand erect, with arms crossed at their chests and relief-like musculature superimposed on their bodies.
    Melissa Harris, Artforum, 10 July 2025
  • In the etching, the nun can be seen seated with her legs open while the three clergymen hold up their robes, revealing their erect penises.
    Jack Guy, CNN Money, 3 June 2025

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Cite this Entry

“Perpendicular.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/perpendicular. Accessed 29 Jul. 2025.

More from Merriam-Webster on perpendicular

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