blot

Noun

• an act that brings discredit to the person who does it
  • he made a huge blot on his copybook
    

• a blemish made by dirt
  • he had a smudge on his cheek
    

Verb

• make a spot or mark onto
  • The wine spotted the tablecloth
    

• dry (ink) with blotting paper

Related words

• Synonyms: 
  smear , smirch , spot , stain , smudge , daub , slur , fleck , blob