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

The old silver and gold shops, their facades blackened by time, were gone. — Lina Sergie Attar, Time, 6 Aug. 2026

It was blackened, charred, the conductor that had drawn the single precise punch of lightning. — Brian Truitt, USA Today, 27 July 2026

If basil is exposed to freezing temperatures, the result is frost damage that can cause leaves to blacken. — Heather Bien, The Spruce, 26 July 2026

Elephant Fire The Elephant Fire, burning since July 11 in the Tahoe National Forest, has blackened nearly 14,000 acres in Sierra, Plumas and Lassen counties, and is 92% contained. — Darrell Smith, Sacbee.com, 21 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