official
US /əˈfɪʃ.əl/
UK /əˈfɪʃ.əl/

1.
relating to an authority or public body and its activities and responsibilities
:
•
The mayor made an official announcement.
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This is the official website for the event.
2.
having the approval or authorization of an authority
:
•
The results are not yet official.
•
The decision became official after the board meeting.
1.
a person holding public office or having official duties, especially as a representative of an organization or government
:
•
A government official addressed the press.
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He is a high-ranking official in the company.