officially

adjective

1. of or holding an office, or position of authority
2. by, from, or with the proper authority; authorized or authoritative: an official request
3. in a formal or ceremonious manner, often involving persons of authority: an official welcome to the city
4. formally set or prescribed: the official date of publication
5. Med., Pharmacy contained in the current pharmacopeia; authorized for use in medicine

Origin: OFr < LL officialis

noun

1. a person holding office, esp. public office
2. Sports one who supervises an athletic contest, as a referee, umpire, etc.