This is the 2433rd most frequent Dutch word.
waarschuwen
To warn.
The word 'waarschuwen' is used to indicate an act of alerting someone about something threatening or potentially harmful.
Ik moet je waarschuwen voor het gevaar.
I need to warn you about the danger.
Here, 'waarschuwen' means to advise or notify someone of a consequence to change their actions.
De leraar waarschuwde de leerling voor zijn gedrag.
The teacher warned the student about his behavior.
In this instance, 'waarschuwen' refers to the action of informing someone about an event to prepare for it.