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 The dipole antennas are mounted perpendicular to each other on a small turntable, forming an X when seen from above. IEEE Spectrum, 20 Jan. 2026 The clip shows Good behind the wheel of her SUV, which is parked perpendicular to the roadway, as the person taking the video circles the vehicle. Madison E. Goldberg, PEOPLE, 20 Jan. 2026 The 500-year-old chapel is England’s best surviving example of late Gothic architecture, a style emphasizing perpendicular lines. Rick Steves, Chicago Tribune, 20 Jan. 2026 The video shot by Ross starts with the ICE agent in front of Good’s burgundy SUV, which was stopped for a few minutes perpendicular to a snowy residential Minneapolis street, obstructing the flow of traffic. Zoe Sottile, CNN Money, 17 Jan. 2026 See All Example Sentences for perpendicular
Recent Examples of Synonyms for perpendicular
Adjective
  • Built for a client focused on results rather than polish by Nick Maselli, the robot—named Sourccey—features a cylindrical, mobile body with a domed top, two articulated arms, and a central vertical lift for handling garments.
    Jijo Malayil, Interesting Engineering, 10 Feb. 2026
  • Ten thousand cattails were used to create thin vertical rods, which were affixed to the perimeter of an octagonal skylight, creating a chapel with gently undulating walls.
    Rebecca Mead, New Yorker, 9 Feb. 2026
Adjective
  • The crowd in the stadium let their emotions pour out as well, giving him a standing ovation.
    Ciara Moran, CBS News, 11 Feb. 2026
  • The new president got a standing ovation.
    Zack Sharf, Variety, 11 Feb. 2026
Adjective
  • According to the woman Hernandez became erect while touching her back and stomach, then covered himself with a pillow, the affidavit read.
    Shambhavi Rimal, Fort Worth Star-Telegram, 4 Feb. 2026
  • For total protection, erect metal or polypropylene deer fencing around the plant to prevent them from entering.
    Lee Wallender, The Spruce, 8 Jan. 2026

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Cite this Entry

“Perpendicular.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/perpendicular. Accessed 16 Feb. 2026.

More from Merriam-Webster on perpendicular

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