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
Steeped in tradition, such companies offer rich histories to plumb. Julie Belcove, Robb Report, 8 Mar. 2025 Ayers’ career got a significant revival in the 1990s when, during hip-hop’s Golden Era, sample-minded emcees plumbed his ample catalog and worked his music into theirs. Christie D’zurilla, Los Angeles Times, 6 Mar. 2025 See All Example Sentences for plumb
Recent Examples of Synonyms for plumb
Adjective
  • The bagels were utter perfection to my mind, taste buds and insidees, and a spell of satisfaction and euphoria took over.
    Michelle Greenwald, Forbes.com, 1 July 2025
  • But the European agenda must also aim to reverse Gazans’ utter dependence on outside aid while enhancing reconstruction standards.
    Josep Borrell Fontelles, Foreign Affairs, 27 June 2025
Adjective
  • Metal filing cabinets first appeared during the 1920s, when document storage shifted from horizontal to space-saving vertical models.
    Yelena Moroz Alpert, Architectural Digest, 30 June 2025
  • The young Democratic socialist swept the primary on the back of a media strategy fit for 2025: clever short-form vertical videos, intense message discipline focused on affordability, and an openness to talking to anyone — from niche menswear fashion podcasts to legacy players.
    Max Tani, semafor.com, 30 June 2025
Adverb
  • The intelligence explosion will take us straight to the right amount of intelligence that suffices for AGI.
    Lance Eliot, Forbes.com, 1 July 2025
  • Fox’s fashion, on the other hand, drew a stark contrast, comprised of an exaggerated baby-doll dress plucked straight from Jacobs’ spring 2025 collection.
    Kaleigh Werner, Footwear News, 1 July 2025
Adverb
  • When fully operational, the plant’s output will reach up to 10,000 metric tons of circular polyester annually, the company said.
    Kate Nishimura, Footwear News, 1 July 2025
  • Rounding out the trio is the Circadian Cream Overnight Collagen Seal ($135), a rich overnight mask that doesn’t fully absorb—by design—so skin wakes up still visibly moisturized and refreshed.
    Tiana Randall, Forbes.com, 1 July 2025
Adverb
  • Ballots dropped in a smart box can be tracked immediately, Michalowski said.
    Sophie Levenson, Chicago Tribune, 8 July 2025
  • The school did not immediately respond to a message left Monday morning.
    CBS News, CBS News, 8 July 2025
Verb
  • While originally set to create upwards of 2,500 jobs once operational and bring a $3.5 billion dollar investment from Ford, the project has since been scaled back.
    Elyse Apel, The Washington Examiner, 1 July 2025
  • Senate Republicans have passed President Trump's signature domestic policy bill, setting the stage for a final vote in the House on legislation that would cut trillions of dollars in taxes while scaling back spending on Medicaid, food assistance and clean energy programs.
    Elena Moore, NPR, 1 July 2025
Adjective
  • Now, fans only need to wait until July 25 to get their hands on the complete EP.
    Hugh McIntyre, Forbes.com, 11 July 2025
  • Once complete, it is supposed to house up to 3,000 detainees a day at a cost of $450 million a year.
    Jeffrey Schweers, The Orlando Sentinel, 11 July 2025
Adjective
  • 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
  • Cut plants back to the ground after flowering to avoid unwanted re-seeding. Name: Symphyotrichum novae-angliae Size: 3-6 feet tall, 2-3 feet wide Zones: 4-8 Swamp Milkweed The large clusters of pink or rose-purple flowers appear in summer at the tops of tall, erect stems.
    Rita Pelczar, Better Homes & Gardens, 3 June 2025

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Cite this Entry

“Plumb.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/plumb. Accessed 14 Jul. 2025.

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