This is the 922nd most frequent Croatian word.
potvrđen
Confirmed.
In this sentence, "potvrđen" works as a predicate adjective to describe the status of the subject "datum našeg susreta" indicating it has not yet been validated.
Datum našeg susreta još nije potvrđen.
The date of our meeting is not yet confirmed.
Here, "potvrđen" acts as a participle describing the state of the subject "he" being officially declared a committee member.
Potvrđen je za člana odbora nakon izbora.
He was confirmed as a member of the committee after the election.
In this sentence, "potvrđen" functions as a predicate adjective conveying that the subject "Njegov dolazak" has been confirmed as an event.