smearer

noun8

1. •
   Someone who smears.
2. •
   Someone who tries to damage another's reputation through slander or innuendo.

   • Spiro Agnew thought it enough to label journalists as liberals in order to establish their untrustworthiness, which is the method of a smearer in all ages. — 1974
3. •
   Someone who spreads a substance across a surface.

   • The walls, strongly built of stones, are still breast-high, and the marks of the smearers’ fingers on the plaster inside plainly visible. — 1900
4. •
   (Scotland, historical) A worker employed to apply a tar-based salve to sheep to protect their skin during the winter.

   • […] when the smearer had inlaid with his mixture of butter and tar, that number of the fleeces of the living flock which it was his daily task thus to cover from the cold, — 1807
5. •
   Something used for smearing.
6. •
   (disapproving) An unskillful painter.

   • […] a picture painted by some German smearer of the early sixteenth century; very ugly, stupid, and unattractive; ill drawn, ill composed, of a uniform hard, vulgar brown. — 1880
7. •
   A circuit used to eliminate the overshoot of a pulse.
8. •
   (disapproving, no longer used) A person without skill or education who attempts to cure diseases.