blacken

Synonyms: befoul begrime blot cloud deepen ebonize grow dark grow dim ink make dark shade smudge soil

Antonyms: bleach lighten whiten

Synonyms: asperse attack bad-mouth blot blotch calumniate decry defame defile denigrate dishonor do a number on give a black eye knock libel malign rip rip up and down slander slur smudge stain sully taint tarnish traduce vilify

Antonyms: compliment enhance praise