This is the 565th most frequent Swedish word.
åter
"Åter" means "again" or "back" in English.
In this sentence, 'åter' is part of the word 'återvände', meaning 'returned'. It signifies coming back to a place.
Jag återvände hem efter resan.
I returned home after the trip.
Here, 'åter' is used as an adverb to mean 'again' or 'back', indicating a repetition of action.
Han går åter till skolan imorgon.
He is going back to school again tomorrow.
In this example, 'åter' is an adverb meaning 'again', used to indicate that the book has become available once more.