This is the 297th most frequent Croatian word.
potrebno
Necessary.
The word 'potrebno' is used as an impersonal predicate indicating necessity.
Potrebno je završiti domaći zadatak prije ponedjeljka.
It is necessary to finish the homework before Monday.
Here 'potrebno' functions as an adverb describing the condition of necessity.
Ako je potrebno, možemo razgovarati kasnije.
If necessary, we can talk later.
In this sentence, 'potrebno' is used to state the requirements for an action or process.