officialof·fi·cial1 /əˈfɪʃəl/ adjectiveadj1approved of or done by someone in authority, especially the governmentYou have to get official permission to build a new house.
Have you signed the necessary official documents?
the official inquiry into the scandal
2done as part of your job and not for your own private purposesAre you here in your official capacity?
If you have to go away from the office on official business, the company will pay for the cost of travel.
The agreement was signed during an official visit to France by the Prime Minister.
3chosen to represent someone or an organization, or do something for themThe role of trade unions as workers’ official representatives comes into play during strikes and other kinds of industrial action.