This is the 613th most frequent Croatian word.
staviti
"Staviti" means "to put" or "to place."
Here, 'staviti' signifies adding something into a mixture, in this case, adding sugar into tea.
Molim te, možeš li staviti šećer u čaj?
Please, can you put some sugar into the tea?
In this sentence, 'staviti' is used to mean 'to place' or 'to put' an object in a specific location.
Trebam staviti knjigu na stol.
I need to put the book on the table.
In this context, 'staviti' indicates the act of adding an ingredient with the consideration of amount or effect.