gomilati

1. (+ acc.) to accumulate; to amass; to hoard
   Godinama gomila stare novine u podrumu. — He has been hoarding old newspapers in the basement for years.
   Firma gomila dugove. — The company is piling up debts.
2. (gomilati se, of things) to pile up; to accumulate
   Na stolu mi se gomilaju papiri. — Papers keep piling up on my desk.
   Problemi se gomilaju iz dana u dan. — The problems are piling up day by day.
3. (gomilati se, of people) to crowd; to gather
   Ljudi su se gomilali ispred ulaza. — People were crowding in front of the entrance.

The perfective is nagomilati.