official

a worker who holds or is invested with an office

someone who administers the rules of a game or sport; "the golfer asked for an official who could give him a ruling"

having official authority or sanction; "official permission"; "an official representative"

of or relating to an office; "official privileges"

verified officially; "the election returns are now official"

conforming to set usage, procedure, or discipline; "in prescribed order"

(of a church) given official status as a national or state institution