This is the 797th most frequent Danish word.
forsvinder
"Forsvinder" means "disappears" or "vanishes" in English.
The verb 'forsvinder' is used here to describe the action of the sun going out of view, a literal disappearance.
Solen forsvinder bag horisonten.
The sun disappears behind the horizon.
Here, 'forsvinder' is used to indicate that the pen is missing or lost.
Min pen forsvinder altid fra mit skrivebord.
My pen always disappears from my desk.
In this context, 'forsvinder' metaphorically suggests becoming deeply absorbed or lost in thoughts.