Completed or finished (4)
I believe the answer is:
done
I believe this is a double definition.
'completed' is the first definition.
(something that's been completed has been done)
'finished' is the second definition.
(similar in meaning)
(Other definitions for done that I've seen before include "Tricked" , "Managed" , "Thoroughly cooked; accomplished" , "that may be said to seal a deal" , "This sort of thing is socially acceptable" .)