smear in WordNet English dictionary

1. charge falsely or with malicious intent; attack the good name and reputation of someone
   "The journalists have defamed me!" "The article in the paper sullied my reputation"
   defame  slander  smirch  asperse  denigrate  calumniate  smear  sully  besmirch 
   
2. make a smudge on; soil by smudging
   smear  blur  smudge  smutch 
   
3. cover (a surface) by smearing (a substance) over it
   "smear the wall with paint"; "daub the ceiling with plaster"
   daub  smear 
   
4. stain by smearing or daubing with a dirty substance
   smear 
   

1. an act that brings discredit to the person who does it
   "he made a huge blot on his copybook"
   blot  smear  smirch  spot  stain 
   
2. a blemish made by dirt
   "he had a smudge on his cheek"
   smudge  spot  blot  daub  smear  smirch  slur 
   
3. a thin tissue or blood sample spread on a glass slide and stained for cytologic examination and diagnosis under a microscope
   smear  cytologic smear  cytosmear 
   
4. slanderous defamation
   smear  vilification  malignment