prikradati

1. (with se, + dat.) to sneak up; to creep up
   Mačka se polako prikrada golubu. — The cat is slowly sneaking up on the pigeon.
   Deca su se prikradala vratima da prisluškuju. — The kids were creeping up to the door to eavesdrop.
2. (of feelings, thoughts) to creep in; to steal over
   Sumnja mi se prikrada sve češće. — Doubt is creeping in more and more often.

Used with se; the person approached is in the dative: prikradati se nekome.