plumb 1 of 3

plumb

2 of 3

adverb

1
as in straight
in a direct line or course I can't believe he walked plumb into the tree, without even seeing it!

Synonyms & Similar Words

Antonyms & Near Antonyms

2
3

plumb

3 of 3

verb

as in to scale
to measure the depth of (as a body of water) typically with a weighted line plumbed the bay to make sure it was deep enough for the ship

Synonyms & Similar Words

Synonym Chooser

How does the adjective plumb differ from other similar words?

The words perpendicular and vertical are common synonyms of plumb. While all three words mean "being at right angles to a base line," plumb stresses an exact verticality determined (as with a plumb line) by earth's gravity.

make sure that the wall is plumb

When might perpendicular be a better fit than plumb?

Although the words perpendicular and plumb have much in common, 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

In what contexts can vertical take the place of plumb?

In some situations, the words vertical and plumb are roughly equivalent. However, 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 plumb
Adjective
Mars will appear plumb against its sparkling stars tonight — though the couple of nights either side will also give a great binocular view. Jamie Carter, Forbes, 6 Mar. 2025 Its clean lines with plumb bow at first appear European, though the twin outboards at the stern signify it as an American boat. Michael Verdon, Robb Report, 14 Feb. 2025
Verb
The mother had asked the woman, a friend, to plumb the internet for news after not hearing from her daughter for days. New York Times, 22 July 2025 The new film from Jesse Armstrong, the creator of Succession, plumbs some familiar ground with its cast of rich people trying to get richer in the face of disaster. K. Thor Jensen, PC Magazine, 30 May 2025 See All Example Sentences for plumb
Recent Examples of Synonyms for plumb
Adjective
  • The clip, filmed from inside a car, shows the dog with his mouth agape, staring in utter disbelief at the sight outside the window.
    Maria Morava, MSNBC Newsweek, 18 Aug. 2025
  • This cookie was soft, nutty, salty, sweet—bite after bite, its utter deliciousness washed over me.
    Sam Stone, Bon Appetit Magazine, 15 Aug. 2025
Adjective
  • The upper stage vehicle where crew and cargo would one day ride completed several key objectives before making a vertical landing in the Indian Ocean.
    Eric Lagatta, USA Today, 28 Aug. 2025
  • De Weerd praised the development’s walkability and the use of vertical space.
    Rose Evans, Idaho Statesman, 28 Aug. 2025
Adverb
  • Silva extended his winning streak to eight straight with his win over Vallejos.
    Trent Reinsmith, Forbes.com, 1 Sep. 2025
  • The retro design looks straight out of a rock ‘n’ roll history book, which is half the fun of owning it.
    PC Magazine, PC Magazine, 30 Aug. 2025
Adverb
  • Still, the largest enterprise customers will likely take much longer to fully transition.
    Steve McDowell, Forbes.com, 1 Sep. 2025
  • After the fire is fully contained, the next step is to control it.
    CA WILDFIRE BOT, Sacbee.com, 31 Aug. 2025
Adverb
  • Sony Pictures did not immediately respond to USA TODAY's request for more information.
    Saman Shafiq, USA Today, 26 Aug. 2025
  • In a tariff-volatile world, the ability to model a change in duty rates in one jurisdiction and immediately see the downstream effects can be worth millions, if not hundreds of them.
    Alexander Puutio, Forbes.com, 25 Aug. 2025
Verb
  • While focus is often on seed funding, scaling, and corporate infrastructure, individual consequences — cross-border tax, valuations, succession planning, and asset protection for intergenerational wealth preservation — are frequently an afterthought.
    Priya Prakash Royal Esq. LL.M. MBA AEP TEP, Forbes.com, 1 Sep. 2025
  • These types of vehicles are scaled down versions of the original model and are made for children to drive.
    Keenan Thompson, USA Today, 31 Aug. 2025
Adjective
  • According to The Wall Street Journal, the main house has five bedrooms and is complete with mountain views.
    Kaycee Sloan, USA Today, 29 Aug. 2025
  • The dinner will be complete with an award presentation for La Fonda Street owner Robert Encarnación.
    Lyndsay C. Green, Freep.com, 28 Aug. 2025
Adjective
  • The name of Fort Benning, for example, was suggested by the United Daughters of the Confederacy, an organization that sought to rewrite history textbooks and erect monuments that honored the Confederacy and downplayed slavery's centrality to the Civil War.
    Davis Winkie, USA Today, 19 July 2025
  • Construction crews pour concrete and erect steel faster every year, yet one stubborn line item keeps projects over budget: paperwork.
    Shuangling Yin, Forbes.com, 17 June 2025

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Cite this Entry

“Plumb.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/plumb. Accessed 3 Sep. 2025.

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