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
There will be other plumb roles, including that of Mr Rochester, the brooding master of Thornfield Hall. Andreas Wiseman, Deadline, 24 Feb. 2026 While still on Dawson’s Creek, Van Der Beek hosted Saturday Night Live — the musical guest was Everlast — and landed a plumb role in Varsity Blues, playing a second-string high school quarterback who leaps into the breach when the star suffers an injury. Dallas Morning News, 11 Feb. 2026
Verb
The projects have ranged from custom built-ins to plumbing work and even an entire basement apartment. Ashley Vega, PEOPLE, 10 June 2026 The second level is that of the novel, whose task is to plumb the depths of the human condition. Nina Mesfin, New Yorker, 7 June 2026 See All Example Sentences for plumb
Recent Examples of Synonyms for plumb
Adjective
  • My son-in-law feels blindsided, as my daughter is asking for a complete break.
    R. Eric Thomas, Chicago Tribune, 30 June 2026
  • The vast Lake Tahoe estate of Beach Boys co-founder Mike Love, complete with a theater, wine tasting room, ice-skating rink and sauna, could be yours — for the small price of $43 million.
    Noah Haggerty, Los Angeles Times, 29 June 2026
Adjective
  • In October 2025 Anthropic launched Claude for Life Sciences, the first time that the company released a product for a specific vertical market.
    Rob Toews, Forbes.com, 22 June 2026
  • According to reporting by Defence Blog, the V-BAT, officially designated the MQ-35A by the US military, is a vertical takeoff and landing (VTOL) drone designed to operate from ships, expeditionary bases, and other locations where conventional aircraft would struggle to launch or recover.
    Kaif Shaikh, Interesting Engineering, 22 June 2026
Adverb
  • Get the best meats, poultry and seafood delivered straight to your doorstep with a Good Chop subscription and score a free Blackstone Griddle with your 3rd order.
    Rachel Cortez, USA Today, 4 July 2026
  • Amazon has deals on the exact brands the multi-hyphenate wears and raves about, plus pieces pulled straight from her playbook (cough, her Instagram, cough).
    Annie Blackman, InStyle, 3 July 2026
Adverb
  • The clambake is ready when the clams have fully opened, the potatoes are tender, the broth is bubbling and the sausage is heated through.
    Staff, FOXNews.com, 3 July 2026
  • Do not try to relight or retrieve fireworks that have not fully ignited.
    Stephen J. Beard, USA Today, 3 July 2026
Adverb
  • Affidavits supporting the Johnsons’ arrests were not immediately available Friday evening.
    Lillie Davidson, Fort Worth Star-Telegram, 4 July 2026
  • Councilmember Monica Rodriguez, who voted against the proposal in mid-June, voiced fears that the list of noncitizen voters would immediately be seized by federal immigration authorities.
    Melissa Gomez, Los Angeles Times, 4 July 2026
Verb
  • The pair is also known for scaling buildings around the world.
    Eduardo Cuevas, USA Today, 2 July 2026
  • Since relocating to Los Angeles, Gonzalez’s small downtown team has scaled Happy Organics into a design-forward brand carried by major retailers, anchored in local maker communities and a sense of purpose.
    Lisa Boone, Los Angeles Times, 1 July 2026
Adjective
  • Others shared in the catharsis, too — some resorting to jokes about the hectic postgame interviews Anthony Edwards and Ball furnished, some resorting to utter confusion.
    Alex Zietlow, Charlotte Observer, 25 June 2026
  • The scene around me was one of utter bedlam, with stadium officials even joining in the celebrations.
    Ben Church, CNN Money, 25 June 2026
Adjective
  • My posture is erect, gait easy, expression flat, uninterested.
    Danielle Parker, CBS News, 21 May 2026
  • Plants add stunning texture and shining color to the garden with metallic, lavender-blue bracts surrounding flowers that stand erect on purple stems.
    Kim Toscano, Southern Living, 10 May 2026

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Cite this Entry

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

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