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 Additionally, electronic screening from the metal surface greatly altered images of vibrations that moved perpendicular to the surface. Georgina Jedikovska, Interesting Engineering, 11 Feb. 2026 Vonn tried to twist and regain her balance in mid-air but landed awkwardly with her skis perpendicular to the fall line, ensuring a brutal fall. Andrew Dampf, Denver Post, 8 Feb. 2026 If the lever is perpendicular to the gas line, the gas valve is shut off. Timothy Dale, The Spruce, 28 Jan. 2026 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 See All Example Sentences for perpendicular
Recent Examples of Synonyms for perpendicular
Adjective
  • Multiple engines attached to the wings swivel into vertical and horizontal positions to accommodate a lift like a helicopter and provide forward movement.
    David Lyons, Sun Sentinel, 9 Mar. 2026
  • With slit-seeding, a machine called either a slice seeder or slit seeder cuts vertical slits through the thatch layer and into the soil, leaving behind shallow grooves about one-inch deep.
    Kim Toscano, Southern Living, 9 Mar. 2026
Adjective
  • His best finish was 20th in the middle-distance standing event in Beijing.
    Charlotte Carroll, New York Times, 6 Mar. 2026
  • Lindo received a standing ovation, during which Jordan could be seen smiling at his co-star from the audience and clapping.
    Isabel Yip, NBC news, 1 Mar. 2026
Adjective
  • Lily stood erect and silent, waiting for her part in the hunt.
    Delbert L. Chears, Outdoor Life, 5 Mar. 2026
  • The same rush to rename buildings, erect statues, hang massive banners of faces and publicly declare fealty to the leader in power is on display in North Korea, Cuba and the former Soviet Union.
    Sun Sentinel Editorial Board, Sun Sentinel, 27 Feb. 2026

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Cite this Entry

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

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