blacken (v.)
- abuse
- asperse
- attaint
- becloud
- bedaub
- bedim
- begrime
- berate
- besmear
- besmirch
- bespatter
- black
- blackwash
- blot
- blotch
- blur
- brand
- brown
- censure
- charcoal
- cloud
- cork
- darken
- daub
- defame
- defile
- denigrate
- dim
- dinge
- dirty
- disapprove
- discolor
- discredit
- disparage
- ebonize
- eclipse
- execrate
- expose
- gibbet
- ink
- jaw
- libel
- malign
- mark
- melanize
- muckrake
- murk
- obfuscate
- obnubilate
- obscure
- occult
- overcast
- overcloud
- overshadow
- pillory
- rag
- rate
- reprimand
- revile
- scorch
- sear
- shade
- shadow
- singe
- slander
- slur
- smear
- smirch
- smoke
- smudge
- smut
- smutch
- soil
- soot
- spot
- stain
- stigmatize
- sully
- taint
- tarnish
- traduce
- vilify
- vituperate