prikrasti

1. (prikrasti se) to sneak up; to creep up
   Mačka se prikrala ptici iza žbuna. — The cat crept up on the bird from behind the bush.
   Prikrao mi se s leđa i uplašio me. — He sneaked up on me from behind and scared me.
2. (of a thought, feeling) to creep in
   San mu se neprimetno prikrao. — Sleep crept up on him unnoticed.
   Prikrala mi se sumnja da laže. — A suspicion crept in that he was lying.

Used with se; the person approached is in the dative (prikrasti se kome) or do + genitive. For a mistake creeping into a text Serbian uses potkrasti se: potkrala se greška.