smear

noun

\ ˈsmir

Definition of smear

(Entry 1 of 2)

1a : a viscous or sticky substance

b : a spot made by or as if by an unctuous or adhesive substance

2 : material smeared on a surface (as of a microscopic slide) also : a preparation made by smearing material on a surface a vaginal smear

3 : a usually unsubstantiated charge or accusation against a person or organization —often used attributively a smear campaigna smear job