Antonyms of verb blacken

1 of 2 senses of blacken

Sense 1
blacken, melanize, melanise, nigrify, black -- (make or become black; "The smoke blackened the ceiling"; "The ceiling blackened")
       Antonym of whiten (Sense 1)
      => whiten, white -- (turn white; "This detergent will whiten your laundry")

Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb blacken

2 senses of blacken

Sense 1
blacken, melanize, melanise, nigrify, black -- (make or become black; "The smoke blackened the ceiling"; "The ceiling blackened")
       => discolor, discolour, colour, color -- (change color, often in an undesired manner; "The shirts discolored")

Sense 2
char, blacken, sear, scorch -- (burn slightly and superficially so as to affect color; "The cook blackened the chicken breast"; "The fire charred the ceiling above the mantelpiece"; "the flames scorched the ceiling")
       => burn -- (burn with heat, fire, or radiation; "The iron burnt a hole in my dress")

Antonyms of adj blackened

2 senses of blackened

Sense 1
blackened -- (darkened by smoke; "blackened rafters")

INDIRECT (VIA smoky) -> smokeless -- (emitting or containing little or no smoke; "smokeless factory stacks"; "smokeless fuel"; "a smokeless environment")

Sense 2
black, blackened -- ((of the face) made black especially as with suffused blood; "a face black with fury")

INDIRECT (VIA colored) -> uncolored, uncoloured -- (without color; "pure water is uncolored")

Similarity of adj blackened

2 senses of blackened

Sense 1
blackened -- (darkened by smoke; "blackened rafters")
       => smoky (vs. smokeless) -- (marked by or emitting or filled with smoke; "smoky rafters"; "smoky chimneys"; "a smoky fireplace"; "a smoky corridor")

Sense 2
black, blackened -- ((of the face) made black especially as with suffused blood; "a face black with fury")
       => colored (vs. uncolored), coloured, colorful -- (having color or a certain color; sometimes used in combination; "colored crepe paper"; "the film was in color"; "amber-colored heads of grain")