Besmear :: Besmear (v. t.) To smear with any viscous, glutinous matter; to bedaub; to soil..
Besmirch :: Besmirch (v. t.) To smirch or soil; to discolor; to obscure. Hence: To dishonor; to sully.
Besmoke :: Besmoke (v. t.) To harden or dry in smoke.
Besmut :: Besmut (v. t.) To blacken with smut; to foul with soot.