plumb 1 of 3

Definition of plumbnext

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
An actor’s job is to plumb emotions at a moment’s notice. Anne Thompson, IndieWire, 19 Nov. 2025 On Tuesday morning, the parking lot and the gravel road near the Oglala Commodity Warehouse in Pine Ridge was plumb-full of pick-up trucks and cars. Alicia Wallace, CNN Money, 7 Nov. 2025
Verb
Ophelia’s Got Talent plumbs the depths of the nineteenth-century cult of Ophelia, epitomized in John Everett Millais’s famous painting of her watery death. Caroline Lillian Schopp, Artforum, 13 May 2026 The two-car garage, upgraded with electrical and plumbing infrastructure for an additional washer and dryer, has a 16-foot ceiling that provides ample height for vehicle lifts to double its capacity. Sandra Barrera, Oc Register, 13 May 2026 See All Example Sentences for plumb
Recent Examples of Synonyms for plumb
Adjective
  • Premier Sea View rooms, complete with balconies, are the prime choices.
    Condé Nast, Condé Nast Traveler, 1 June 2026
  • And ceasefire, allowing complete unfettered access, and most importantly, a full respect for humanitarian law and humanitarian aid workers, and that simply isn't happening at all right now.
    CBS News, CBS News, 31 May 2026
Adjective
  • The kitchen garden and greenhouse at Coolmore Stud supply much of the fruit and veg, while herbs, lettuce and micro greens are grown in a pesticide-free vertical farm nearby.
    Condé Nast, Condé Nast Traveler, 2 June 2026
  • Thai rescue technician Manat Artmongkron said the response had been heard 70 meters (230 feet) down the vertical shaft.
    Kocha Olarn, CNN Money, 1 June 2026
Adverb
  • Only the one-bedroom villas have the atypical circular design, while the two-bedroom villas and the massive three-bedroom Ritz-Carlton Estate are straight-edged.
    Condé Nast, Condé Nast Traveler, 1 June 2026
  • Andy Pages doubled off Phillies reliever Orion Kerkering – a matchup straight out of Philadelphia’s nightmares – and scored on Mookie Betts’ third hit of the night, a single to right field.
    Bill Plunkett, Oc Register, 31 May 2026
Adverb
  • The book is a poetry collection structured in three acts with seven players, each assigned a color of the rainbow and an apparition’s name, each of whom needs an audience to fully exist.
    Literary Hub, Literary Hub, 29 May 2026
  • But critics questioned if the arrangement fully addressed the core national security concerns that motivated the TikTok ban legislation in the first place because ByteDance was set to retain control of some of the US app’s operations.
    Clare Duffy, CNN Money, 29 May 2026
Adverb
  • Spurs reserve Harrison Barnes accidentally collided with Brunson's right knee while falling to the floor, and the Knicks star immediately grabbed at the leg in apparent pain.
    Scott Thompson, FOXNews.com, 4 June 2026
  • SoftBank did not immediately respond to CNBC's request for comment.
    Lee Ying Shan, CNBC, 4 June 2026
Verb
  • Among the city efforts Dunning said would be scaled back were facility maintenance, mowing and right-of-way upkeep in lower-priority areas, curb and sidewalk repairs and services in public-facing departments.
    Nathan Pilling, Kansas City Star, 4 June 2026
  • Price scaled from 2 to 40 lawyers by implementing comprehensive organizational systems, A-players, and data that compounds.
    K. H. Koehler, USA Today, 3 June 2026
Adjective
  • What’s most striking is its utter lack of substance.
    Michelle Goldberg, Mercury News, 29 May 2026
  • When the squad reported back to Kirkby five days after his death, the training complex was a scene of utter devastation.
    James Pearce, New York Times, 28 May 2026
Adjective
  • The solitary daisy-like golden yellow flowers emerge from slender, erect stems.
    Jamie McIntosh, The Spruce, 5 May 2026
  • The chickens stomp with swift feet like an Irish step dancer, keeping their tails erect and wings drooped.
    Laura Baisas, Popular Science, 29 Apr. 2026

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Cite this Entry

“Plumb.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/plumb. Accessed 5 Jun. 2026.

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