This is the 932nd most frequent Persian word.
خطرناک
Dangerous.
Here, 'خطرناک' characterizes the animal 'شیر' (lion), indicating its inherent potential for harm when approached.
شیر یک حیوان خطرناک است اگر به او نزدیک شوید.
The lion is a dangerous animal if you approach it.
The word 'خطرناک' means 'dangerous' and is used here as an adjective describing the noun 'جاده' (road), emphasizing the risk associated with driving in winter conditions.
این جاده برای رانندگی در زمستان بسیار خطرناک است.
This road is very dangerous for driving in winter.
In this sentence, 'خطرناک' describes the situation of swimming in the river, conveying the potential danger due to environmental conditions.