This is the 7256th most frequent Dutch word.
beseffen
To realize or become aware.
In this sentence, 'beseffen' is used to express the notion of coming to an awareness or understanding about the significance of something.
Ik begon te beseffen hoe belangrijk familie is.
I started to realize how important family is.
Here, 'beseffen' is used in the form of a question, asking the interlocutor to grasp or comprehend an action or event.
Kun je beseffen wat hij heeft gedaan?
Can you realize what he has done?
In this instance, 'beseffen' conveys the challenge of fully appreciating or understanding the magnitude of effort involved.