daub (v.) 1
bedaub, smear, defile
1H4 I.i.6 [King Henry to all] No more the thirsty entrance of this soil / Shall daub her lips with her own children's blood
KL II.ii.64 [disguised Kent to Cornwall, of Oswald] I will ... daub the wall of a jakes with him
R3 III.v.29 [Richard to all, of Hastings] So smooth he daubed his vice with show of virtue