What does blacken mean?
Blacken is a versatile English verb meaning to make or become black or markedly darker. It most literally describes surfaces changed by fire, soot, smoke, or age — walls blackened by years of hearth smoke, timber charred by lightning — but it also works intransitively for skies darkening before a storm. Beyond the physical sense, blacken carries a strong figurative use: to blacken someone's name or reputation is to defame or discredit them, a usage common in journalism, law, and political discourse that lends the word a distinctly negative connotation. In American cooking, blackened describes food — famously fish — coated in spices and seared until the surface forms a dark crust, a technique popularised by chef Paul Prudhomme in 1980s Louisiana. Formed simply from the adjective 'black' plus the verb-forming suffix '-en', blacken is transparent in origin yet rich in application, appearing equally comfortably in descriptions of weather, architecture, scandal, and cuisine.
To make or become black or dark in colour; to darken by burning, staining, or soiling.
"The chimneys blackened the skyline of the industrial city."
To damage or defame (someone's reputation or name).
"He claimed his opponents were attempting to blacken his character."
Almost always used with 'name', 'reputation', or 'character' as the object.
In Cajun cooking, 'blackened' isn't burnt — it's a deliberate crust of charred spices invented by chef Paul Prudhomme in 1980s New Orleans.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of blacken
Blacken was formed in Middle English from the adjective 'black', which derives from Old English 'blæc', combined with the verb-forming suffix '-en'. It belongs to a productive Germanic pattern of colour verbs such as 'whiten', 'redden', and 'darken'. Its cognates are therefore chiefly within English itself — words like 'blackish' and 'blackness' share the same root — rather than borrowings from Latin or Greek.
Related word forms
How blacken is actually used
Both transitive ('the fire blackened the ceiling') and intransitive ('the sky blackened') uses are common. The reputational sense is figurative and typically appears in formal writing about defamation or scandal. In American cuisine, 'blackened' as an adjective signals the Cajun spice-crusted cooking technique rather than spoilage.
Easily confused with blacken
Blanket is a noun (or verb meaning to cover completely) and merely resembles 'blacken' in spelling; it has nothing to do with darkening.