This is the 88th most frequent Dutch word.
afgelopen
"Finished" or "past."
In this sentence, "afgelopen" functions as an adjective, meaning "past" or "previous," to describe the time period (week).
De afgelopen week was zeer druk.
The past week was very busy.
Here, "afgelopen" functions as a predicate adjective, meaning "over" or "ended," to describe the state of the concert.
Het concert is afgelopen.
The concert is over.
In this context, "afgelopen" again means "past" or "recent," emphasizing a time period that has recently ended.