Questions & Answers about On nije bolestan; on je zdrav.
On means he.
Croatian is a pro-drop language: you usually don’t have to say the subject pronoun because the verb ending shows who is doing the action.
- On nije bolestan. = Nije bolestan. = He is not sick.
In this sentence, on is used twice for emphasis and contrast:
On nije bolestan; on je zdrav. → He is not sick; he is healthy (he is, not someone else).
You could also say:
- Nije bolestan; zdrav je.
- On nije bolestan; zdrav je.
and they would still be correct and natural, just with slightly different emphasis.