Thesaurus

plumb

adjective

Synonyms & Antonyms of plumb

(Entry 1 of 3)

2 rising straight up
  • the wall was not plumb, so everything else in the room was out of kilter

Synonyms for plumb

Words Related to plumb

Near Antonyms for plumb

Antonyms for plumb

plumb

adverb

Synonyms & Antonyms of plumb (Entry 2 of 3)

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

Synonyms for plumb

Phrases Synonymous with plumb

Near Antonyms for plumb

Antonyms for plumb

plumb

verb

Synonyms of plumb (Entry 3 of 3)

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 for plumb

Words Related to plumb

See the Dictionary Definition 

Frequently Asked Questions About plumb

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

Keep scrolling for more

Learn More about plumb

Time Traveler for plumb

Time Traveler

The first known use of plumb was in the 14th century

See more words from the same century

Statistics for plumb

Last Updated

28 May 2020

Cite this Entry

“Plumb.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/plumb. Accessed 2 Jul. 2020.

Keep scrolling for more

More from Merriam-Webster on plumb

Dictionary: Definition of plumb

Rhyming Dictionary: Words that rhyme with plumb

Spanish Central: Translation of plumb

Nglish: Translation of plumb for Spanish Speakers

Comments on plumb

What made you want to look up plumb? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

See Definitions and Examples »

Get Word of the Day daily email!

Test Your Vocabulary

A More Exception(al) Quiz

  • hot dog  hot dog  hot dog  hot dog cat
  • Which of the following words is not a synonym for ‘a young person’?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Syn City

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!