This is the 566th most frequent Greek word.
δοθεί
"δοθεί" means "be given" or "is given".
In this sentence, 'δοθεί' is used in the past perfect passive voice to imply that the action (giving the answer) was completed.
Η απάντησή του είχε δοθεί εγκαίρως.
His answer had been given on time.
Here, 'δοθεί' indicates the completion of an action (giving the key) in the past with a passive construction.
Το κλειδί είχε δοθεί στη φίλη της.
The key had been given to her friend.
In this instance, 'δοθεί' describes the past transfer of an object (the book) employing a passive voice structure.