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plummet

American  
[pluhm-it] / ˈplʌm ɪt /

noun

  • plummets
    plural
  1. An image of the word plummet as defined by a piece of lead or some other weight attached to a line, used for determining perpendicularity, for sounding, etc.; the bob of a plumb line.

    Also called plumb bob. a piece of lead or some other weight attached to a line, used for determining perpendicularity, for sounding, etc.; the bob of a plumb line.

  2. something that weighs down or depresses.


verb (used without object)

  • plummets,
    present (3rd person singular)
  • plummeted,
    past participle,  past
  • plummeting
    present participle
  1. to plunge.

    Synonyms:
    swoop, drop, dive, fall
plummet British  
/ ˈplʌmɪt /

verb

  1. (intr) to drop down; plunge

"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

noun

  1. another word for plumb bob

  2. a lead plumb used by anglers to determine the depth of water

"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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Etymology

Origin of plummet

1350–1400; (noun) Middle English plommet < Middle French, diminutive of plomb lead; (v.) derivative of the noun See plumb, -et

Explanation

The verb plummet means "to drop sharply," like eagles that plummet toward earth, seeking prey, or school attendance that plummets when there is a flu outbreak. To correctly pronounce plummet, say "PLUH-met." This verb describes something that drops sharply or quickly, like a roller coaster that plummets down a hill, temperatures that plummet overnight, or sales of roses and candy that plummet after Valentine's Day. If something plummets, this doesn't mean it will stay down or low forever, just that it has experienced a sharp drop.

Keep Reading on Vocabulary.com

Vocabulary lists containing plummet

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Like something from King Arthur, a 200-year-old sword was found sticking out from a castle's lake after hot weather caused water levels to plummet.

From BBC ● Aug. 11, 2026

As exports plummet owing to a ban on U.S. wine and liquor, California lawmakers ask Quebec’s premier to sidestep the president, lift the prohibition and promote free trade.

From Los Angeles Times ● Aug. 2, 2026

Most comedies plummet halfway through their second act.

From Salon ● Jul. 12, 2026

Your core temperature continues to plummet because the chilled blood from your extremities returns to your heart.

From The Wall Street Journal ● Jul. 6, 2026

The plummet, he recalled, sick with sudden memory.

From "Strange the Dreamer" by Laini Taylor

Productivity plummets when workers without AC suffer from heat stress.

From The Wall Street Journal ● Aug. 18, 2026

Trade Desk plummets on weaker-than-expected first-quarter earnings and weak revenue guidance.

From Barron's ● May 8, 2026

She doesn’t need the imprimatur of an established brand to maintain an audience; as trust in institutions plummets, such affiliations can even be a turnoff.

From Slate ● May 6, 2026

Scientists warn that as humans move more activities off-Earth, more debris will fall to Earth, polluting as it plummets.

From BBC ● Feb. 19, 2026

He manages to seize the edge of an isle before he plummets to the lagoon below.

From "Warcross" by Marie Lu

He was twice rushed to the hospital after his throat closed, he couldn’t breathe and his blood pressure plummeted — a severe allergic reaction called anaphylaxis.

From Los Angeles Times ● Oct. 4, 2026

Stocks plummeted after word leaked that speculator Jay Gould, who was trying to corner the gold market, had sold his stake in the metal.

From The Wall Street Journal ● Sep. 24, 2026

Ticket prices for the tour plummeted as well.

From BBC ● Sep. 24, 2026

In March 2000, as the bubble burst, shares of companies in the business of transmitting data, or networking, plummeted too.

From MarketWatch ● Sep. 19, 2026

Together they plummeted like a stone, down, down, down toward the rising ground.

From "Throne of Glass" by Sarah J. Maas

The Philippines has struggled to restore routine childhood immunisation rates after years of plummeting coverage, which contributed to a polio resurgence in 2019 and recurring measles outbreaks.

From Barron's ● Oct. 2, 2026

Smartphone and PC shipments are plummeting, but Apple and Dell are expected to keep revenue climbing.

From The Wall Street Journal ● Sep. 23, 2026

Long-standing Olvera Street businesses are grappling with low foot traffic, plummeting sales and falling behind on rent.

From Los Angeles Times ● Aug. 10, 2026

Scottish Conservative MP Andrew Bowie said "plummeting teacher numbers and spiralling levels of school violence" had made it a difficult year for pupils.

From BBC ● Aug. 4, 2026

She was scared of tiny spiders, but not of plummeting to her death from a set of monkey bars.

From "The Battle of the Labyrinth" by Rick Riordan

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