osvežavati

1. (of a drink, air) to refresh; to freshen
   Hladna limunada leti lepo osvežava. — Cold lemonade is really refreshing in summer.
   Kiša je osvežavala vazduh posle vrelog dana. — The rain was freshening the air after a hot day.
2. (osvežavati se) to freshen up; to cool off
   Leti se osvežavamo kupanjem na Adi. — In summer we cool off by swimming at Ada.
3. (of knowledge, memory) to brush up; to refresh
   Svake jeseni osvežavam svoje znanje nemačkog. — Every autumn I brush up on my German.
4. (of a page, data) to refresh; to reload
   Stalno osvežava stranicu da vidi rezultate utakmice. — He keeps refreshing the page to see the match score.

The perfective is osvežiti.