smear 
(smîr)
(smîr)v. smeared, smear·ing, smears
v.tr.
1.
a. To spread or daub (a surface, for example) with a sticky, greasy, or dirty substance.
b. To apply by spreading or daubing: smeared suntan lotion on my face and arms.
c. To cause to be blurry or spread in unwanted places: The ink on the poster was smeared.
2. To stain or attempt to destroy the reputation of; vilify: political enemies who smeared his name.
3. Slang To defeat utterly.
v.intr.
To spread easily in an undesired way: This mascara smears when it gets wet.
n.
1. A mark made by smearing; a spot or blot.
2. A substance to be spread on a surface.
3. Biology A sample, as of blood or bacterial cells, spread on a slide for microscopic examination or on the surface of a culture medium.
4.
a. Vilification or slander.
b. A vilifying or slanderous remark.
[Middle English smeren, to anoint, from Old English smerian.]