Smudge

пятно́

pjatnó

(a blemish; a smear)

замара́ть

zamarátʹ

(to soil or smear with dirt)

испа́чкать

ispáčkatʹ

(to soil or smear with dirt)

мара́ть

marátʹ

(to soil or smear with dirt)

па́чкать

páčkatʹ

(to soil or smear with dirt)

разма́зать

razmázatʹ

(to obscure by blurring)

разма́зывать

razmázyvatʹ

(to obscure by blurring)