smear

(noun) slanderous defamation. Synonyms: vilification, malignment.

(noun) a thin tissue or blood sample spread on a glass slide and stained for cytologic examination and diagnosis under a microscope. Synonyms: cytologic smear, cytosmear.

(noun) a blemish made by dirt. Synonyms: smudge, spot, blot, daub, smirch, slur. Example: "He had a smudge on his cheek."

(noun) an act that brings discredit to the person who does it. Synonyms: blot, smirch, spot, stain. Example: "He made a huge blot on his copybook."

(verb) stain by smearing or daubing with a dirty substance.

(verb) make a smudge on; soil by smudging. Synonyms: blur, smudge, smutch.

(verb) cover (a surface) by smearing (a substance) over it. Synonyms: daub. Examples: "Smear the wall with paint." "Daub the ceiling with plaster."

(verb) charge falsely or with malicious intent; attack the good name and reputation of someone. Synonyms: defame, slander, smirch, asperse, denigrate, calumniate, sully, besmirch. Example: "The journalists have defamed me!" "the article in the paper sullied my reputation."