obiteljski

1. Croat. family; familial
   Imamo obiteljsku kuću na moru. — We have a family house by the sea.
   Bio je to pravi obiteljski ručak. — It was a real family lunch.

2. Croat. as a family
   Svake godine obiteljski idemo na more. — Every year we go to the seaside as a family.

In Serbia: porodični (adjective) and porodično (adverb), or more often cela porodica: Svake godine cela porodica ide na more.