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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

Inflected Forms

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

She’s prepared to leave immediately should the fire worsen or smoke blacken the sky.

From Seattle Times Sep. 12, 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

I had callused my hands; I had scratched dirt to blacken the nails, which I cut straight across to make stubby fingers.

From "The Woman Warrior" by Maxine Hong Kingston

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

The storm that blackens the horizon is sweeping toward us at a frightening pace, its lightning forking closer with each passing second.

From "Warcross" by Marie Lu

One popular order is the Diaspora Delight with blackened salmon and jollof rice.

From Los Angeles Times Aug. 22, 2026

Salisbury was colorful: A mixed martial arts enthusiast, he once appeared at the agency’s headquarters with his face bruised and eye blackened from a recent bout.

From Salon Aug. 15, 2026

As access reopened mid-morning, AFP saw the blackened remains of several burnt-out cars along roads near Omis, some ringed by silver puddles of metal that had melted under the intense heat of the fires.

From Barron's Aug. 14, 2026

From damaged port infrastructure to listing ships with bridges blackened and containers still smouldering, the evidence is everywhere.

From BBC Aug. 6, 2026

In the sword’s reflection, he saw two torches hanging from the ceiling over an old, blackened stone altar.

From "Half Upon a Time" by James Riley

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

From BBC Feb. 5, 2026

That’s why even when a fire is 100% contained, it can still be blackening acres of land, and firefighters can still be battling to keep it from getting out of control.

From Los Angeles Times Sep. 12, 2024

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

From Science Daily Jun. 4, 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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