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Synonyms

blacken

American  
[blak-uhn] / ˈblæk ən /

verb (used with object)

  • blackens,
    present (3rd person singular)
  • blackened,
    past participle,  past
  • blackening
    present participle
  1. to make black; darken.

  2. to speak evil of; defame.

    to blacken a person's reputation.

    Synonyms:
    calumniate, traduce, libel, slander, smear, denigrate

verb (used without object)

  • blackens,
    present (3rd person singular)
  • blackened,
    past participle,  past
  • blackening
    present participle
  1. to grow or become black.

blacken British  
/ ˈblækən /

verb

  1. to make or become black or dirty

  2. (tr) to defame; slander (esp in the phrase blacken someone's name )

"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

Other Word Forms

Derived Forms

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Participles

Conjugated Forms

Present

Past

Future

Etymology

Origin of blacken

Middle English word dating back to 1250–1300; see origin at black, -en 1

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:

The herb has been used for more than 1,000 years and has traditionally been associated with "blacken hair and nourish essence."

From Science Daily ● Jun. 7, 2026

These incidents may temporarily blacken the eyes of the NBA and Major League Baseball but sports gambling is here to stay.

From The Wall Street Journal ● Dec. 5, 2025

If the VX4 ever were to become the mass public transport that Vertical wants it to be, it might literally blacken the skies.

From Seattle Times ● Jul. 22, 2022

Other than that, their meat was a pinch drier than some of the other methods, and their skin got crispy in spots but began to blacken in others before it could become consistently golden.

From Salon ● Feb. 12, 2022

“Are you alright? Tehlu blacken, sit down before you fall down. Are you hurt?”

From "The Name of the Wind" by Patrick Rothfuss

When the ice blackens it's ability to reflect the sun diminishes and this accelerates the melting of the ice.

From Science Daily ● Jun. 4, 2024

"The extent of the destruction blackens our hearts, I apologise for the losses," Mitsotakis said in a televised address, promising his government would stand by all those hurt by the blazes.

From Reuters ● Aug. 9, 2021

A plume of smoke rises up above the streetlamps and blackens the sky.

From The New Yorker ● Jul. 26, 2019

Partridges, pheasants and quail to roast; pigeons to bring to tenderness slowly with red wine and onions, and quails to split, skewer and grill until their skin blackens and their bones crunch.

From The Guardian ● Oct. 8, 2017

Raising a cloud of dirt and debris that blackens the sky.

From "Mockingjay" by Suzanne Collins

Jane Ward is turning the blackened, mouldy pages of a Mr Men book.

From BBC ● Sep. 24, 2026

Four Marines crouch in the foreground surrounded by the blackened remains of burned trees; in the top two-thirds of the picture the black-and-white smoke of the blast billows upward, beautiful in its destruction.

From The Wall Street Journal ● Sep. 10, 2026

A hunting lodge stands beside pine forest burned by a wildfire that started July 22 and blackened about 104,000 acres in and around Le Porge.

From Los Angeles Times ● Aug. 30, 2026

Close to the scene where the remains were found, patches of ground appeared blackened and some vegetation showed signs of fire damage.

From BBC ● Aug. 21, 2026

Cecilia moved round behind Betty to see what everyone else could see—a huge blackened tray recently pulled from the oven bearing a quantity of roast potatoes that still sizzled mildly.

From "Atonement" by Ian McEwan

The mood among many Labour MPs is darkening, even blackening.

From BBC ● Feb. 5, 2026

Algae lying dormant on the ice starts blooming in spring blackening large areas of the ice.

From Science Daily ● Jun. 4, 2024

The midday gray blackening, then brightening, on account of a remote and veiled disk of sun and moon.

From Los Angeles Times ● Apr. 6, 2024

“But some people are blackening the Party’s name.”

From Seattle Times ● Mar. 12, 2024

She stared intently at her marshmallow, holding it outside the lower flames to avoid blackening it.

From "Out of Darkness" by Ashley Hope Pérez

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