This is the 1210th most frequent Swedish word.
försvann
"Försvann" means "disappeared" in English.
Here, 'försvann' indicates that the book ceased to be present or visible.
Min bok försvann från bordet.
My book disappeared from the table.
In this sentence, 'försvann' describes the act of someone moving out of sight, specifically into the woods.
Han försvann snabbt in i skogen.
He disappeared quickly into the forest.
This illustrates 'försvann' used metaphorically for something immaterial, indicating the sound ceased to exist.