This is the 504th most frequent Bulgarian word.
предупреди
Warn.
Here, "предупреди" is used to convey that someone gave a heads-up about challenges ahead.
Предупреди ме за тези трудности, но не ги подцених.
You warned me about these difficulties, but I didn't underestimate them.
In this sentence, "предупреди" indicates the act of informing (warning) someone in advance regarding an impending danger or situation.
Той предупреди групата за приближаващата буря.
He warned the group about the approaching storm.
In this context, "предупреди" serves to notify someone to be ready for unexpected events or conditions.