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View synonyms for

plumb

1

[ pluhm ]

noun

  1. a small mass of lead or other heavy material, as that suspended by a line and used to measure the depth of water or to ascertain a vertical line. Compare plumb line.


adjective

  1. true according to a plumb line perpendicular.

    Synonyms: , ,

  2. Informal. downright or absolute.

adverb

  1. in a perpendicular or vertical direction.
  2. exactly, precisely, or directly.
  3. Informal. completely or absolutely:

    She was plumb mad. You're plumb right.

verb (used with object)

  1. to test or adjust by a plumb line.
  2. to make vertical.
  3. Shipbuilding. horn ( def 32 ).
  4. to sound with or as with a plumb line.
  5. to measure (depth) by sounding.
  6. to examine closely in order to discover or understand:

    to plumb someone's thoughts.

  7. to seal with lead.
  8. to weight with lead.
  9. to provide (a house, building, apartment, etc.) with plumbing.

verb (used without object)

  1. to work as a plumber.

Plumb

2

[ pluhm ]

noun

  1. J(ohn) H(arold), 1911–2001, British historian.

plumb

/ ʌ /

noun

  1. a weight, usually of lead, suspended at the end of a line and used to determine water depth or verticality
  2. the perpendicular position of a freely suspended plumb line (esp in the phrases out of plumb, off plumb )
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

adjective

  1. informal.
    prenominal (intensifier)

    a plumb nuisance

“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

adverb

  1. in a vertical or perpendicular line
  2. informal.
    (intensifier)

    plumb stupid

  3. informal.
    exactly; precisely (also in the phrase plumb on )
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

verb

  1. troften foll byup to test the alignment of or adjust to the vertical with a plumb line
  2. tr to undergo or experience (the worst extremes of misery, sadness, etc)

    to plumb the depths of despair

  3. tr to understand or master (something obscure)

    to plumb a mystery

  4. to connect or join (a device such as a tap) to a water pipe or drainage system
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Derived Forms

  • ˈܳ, adjective
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Other Word Forms

  • ܳa· adjective
  • ܳl adjective
  • ܳn noun
  • ·ܳ verb (used with object)
  • ܲ·ܳ adjective
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Word History and Origins

Origin of plumb1

1250–1300; Middle English plumbe, probably < Anglo-French *plombe < Vulgar Latin *plumba, for Latin plumbum lead
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Word History and Origins

Origin of plumb1

C13: from Old French plomb (unattested) lead line, from Old French plon lead, from Latin plumbum lead
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Idioms and Phrases

Idioms
  1. out of / off plumb, not corresponding to the perpendicular; out of true.
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Example Sentences

Examples have not been reviewed.

"It is also common for air to become trapped in the supply, or within the internal plumbing," SWW said.

From

That change prompted airport officials last year to shift some projects away from terminal expansion to infrastructure updates, such as plumbing fixes.

From

These settlements often lacked indoor plumbing or ventilation, leading to a rapid increase in the spread of illnesses.

From

Most of the building damage from Friday’s quake was nonstructural, hitting partition walls, fixtures, electricity and plumbing, Alam said.

From

Development Programme wants to deploy 1,100 prefab housing units, each equipped with a kilowatt of solar and rudimentary plumbing, as part of a $27 million program.

From

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.

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