Questions & Answers about Istraga nije laka.
Istraga means investigation.
It is a feminine noun in Croatian. A learner can often guess that because many feminine nouns end in -a, and istraga follows that pattern.
In this sentence, istraga is singular: the investigation / an investigation.
In Croatian, the verb biti (to be) has special negative forms in the present tense.
So instead of separating ne + je, Croatian uses the fixed form:
- sam → nisam
- si → nisi
- je → nije
- smo → nismo
- ste → niste
- su → nisu
So nije means is not.