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

• 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

The site was visibly blackened by the degree of rubble thrown up by the strikes. —Cnn.com Wire Service, Mercury News, 23 June 2025

Broil the bell pepper for 4 to 6 minutes, until the skin starts to blacken. —Alana Al-Hatlani, Southern Living, 9 May 2025

Nearly five years after a massive fire burned California’s oldest state park, Big Basin Redwoods, blackening groves of famous ancient redwoods and destroying all the campgrounds, the visitor center and other facilities, state parks officials have finalized a plan to rebuild. —Paul Rogers, Mercury News, 19 June 2025

Lightning had struck a single ponderosa pine, blackening its trunk. —Literary Hub, 18 June 2025

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