smudge (n.)
- afterdamp
- ash
- ashes
- aspersion
- baton
- black
- blackdamp
- blackening
- blackwash
- bloodstain
- blot
- blotch
- blur
- brand
- breath
- calx
- carbon
- censure
- charcoal
- chokedamp
- cinder
- clinker
- cloud
- coal
- coke
- cork
- dab
- damp
- darkening
- daub
- defile
- denigration
- dinge
- disparagement
- dross
- effluvium
- exhalation
- eyesore
- firedamp
- flatus
- fleck
- flick
- fluid
- flyspeck
- foul
- fume
- grime
- imputation
- ink
- lava
- macula
- maculation
- macule
- malaria
- mark
- mephitis
- miasma
- murk
- onus
- patch
- plaster
- reek
- reflection
- reprimand
- reproach
- scoria
- shade
- shading
- shadow
- slag
- slur
- smarm
- smear
- smirch
- smoke
- smooch
- smut
- soil
- soilure
- soot
- spatter
- speck
- speckle
- splash
- splatter
- splotch
- spot
- stain
- steam
- stigma
- stigmatism
- stigmatization
- sully
- taint
- tarnish
- vapor
- volatile
smudge (v.)
- ash
- attaint
- bedaub
- begrime
- besmear
- besmirch
- black
- blacken
- blackwash
- blot
- blotch
- blur
- brand
- breath
- censure
- charcoal
- clinker
- cloud
- coal
- coke
- cork
- dab
- damp
- darken
- daub
- defile
- denigrate
- dinge
- dirty
- ebonize
- fleck
- flick
- foul
- fume
- grime
- ink
- mark
- melanize
- murk
- patch
- plaster
- reek
- reprimand
- reproach
- shade
- shadow
- slag
- slur
- smear
- smirch
- smoke
- smooch
- smut
- smutch
- soil
- soot
- spatter
- speck
- speckle
- splash
- splatter
- splotch
- spot
- stain
- steam
- sully
- taint
- tarnish