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 perpendicular legs create a kind of futuristic aesthetic while the classic wood stain options (black, natural, and white) mean that this table can suit a number of design styles, from modern to minimal. Kate McGregor, Architectural Digest, 1 Aug. 2025 The perpendicular energy from Tuesday's earthquake went toward Hawaii. Michal Ruprecht, NPR, 30 July 2025 His 1806 map does not have street names, but a copy kept with the Library of Congress shows numerical markings below all but one of the streets running perpendicular to the Ohio River. Leo Bertucci, The Courier-Journal, 5 July 2025 Plants are stacked in perpendicular layers, maximizing the use of space. Qusi Alqarqaz, IEEE Spectrum, 12 Oct. 2023 See All Example Sentences for perpendicular
Recent Examples of Synonyms for perpendicular
Adjective
  • This modular setup served as a bridge solution for the Type 125 class, which currently lacks a vertical launch system.
    Aamir Khollam, Interesting Engineering, 17 Oct. 2025
  • Standing out is a spacious living room wrapped in vertical fir siding, plus a dining area that connects to a minimalist kitchen upgraded with newer stainless steel appliances.
    Wendy Bowman, Robb Report, 15 Oct. 2025
Adjective
  • The standing ovation for Sullivan’s save mattered.
    Colin Cerniglia, Charlotte Observer, 18 Oct. 2025
  • Farrell, who is retiring after 13 seasons, entered Saturday’s game as a 71st-minute substitute to a standing ovation.
    Julian Cardillo, Boston Herald, 18 Oct. 2025
Adjective
  • People erect and decorate ofrendas (offerings) with pictures and mementos of loved ones.
    Sarah Buder, AFAR Media, 8 Oct. 2025
  • Many use social media to call for an end to the violence, then erect memorials at the site of the shooting.
    David Clarey, jsonline.com, 10 Sep. 2025

Browse Nearby Words

Cite this Entry

“Perpendicular.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/perpendicular. Accessed 23 Oct. 2025.

More from Merriam-Webster on perpendicular

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!