blacken

verb

black·​en ˈbla-kən 

blackened; blackening

ˈblak-niŋ, 

ˈbla-kə- 

intransitive verb

: to become dark or black

the sky blackens

transitive verb

1

: to make black

2

: defame, sully

blackened her reputation

blackener

ˈblak-nər, 

ˈbla-kə- 

noun

Synonyms of blacken

• stain
• dirty
• besmirch
• sully

Examples of blacken in a Sentence

Fire had blackened the field.

The sky blackened as the storm approached.

Their false accusations failed to blacken my reputation.

a presidency blackened by scandal

Recent Examples on the Web

Large sections of the ceiling were destroyed, blackened and charred, while the floor and tables below, some still with beer bottles on them, were blanketed in ash and debris. — ABC News, 13 July 2026

Pictures shared on social media after the fire was extinguished showed chairs and tables inside the pub completely charred and blackened, with parts of the ceiling peeling off. — Charlotte Phillipp, PEOPLE, 12 July 2026

Check monthly for signs of shriveling (add moisture), blackening or softening (discard). — Tim Johnson, Chicago Tribune, 11 July 2026

Many of them, like Tubbs, were refugee Midwesterners, sick of parching droughts and devouring plagues of locusts, the insects descending in buzzing clouds thick enough to blacken the noonday sun. — Literary Hub, 10 July 2026

Word History

Etymology

Middle English blaknen, blakenen, from blak black entry 1 + -n, -en -en entry 2

First Known Use

14th century, in the meaning defined at intransitive sense

Rhymes for blacken

• bracken
• lakin
• slacken

Kids Definition

blacken

verb

black·​en ˈblak-ən 

blackened; blackening ˈblak-(ə-)niŋ 

1

: to make or become dark or black

2

: to hurt the reputation of

blackener

-(ə-)nər 

noun