pradeda

1. great-grandfather
   Moj pradeda je bio učitelj u selu. — My great-grandfather was a village teacher.
   Ova kuća nam je ostala od pradede. — We inherited this house from our great-grandfather.
2. formal (in plural) forefathers; ancestors
   Naši pradedovi su se borili za ovu zemlju. — Our forefathers fought for this land.

A great-great-grandfather is čukundeda.