Noun

• S: (n) official, functionary (a worker who holds or is invested with an office)
• S: (n) official (someone who administers the rules of a game or sport) "the golfer asked for an official who could give him a ruling"
• direct hyponym / full hyponym
• S: (n) football official (an official who enforces the rules at a football game)
• S: (n) linesman (official (in tennis, soccer, football, etc.) who assists the referee in some way (especially by watching for out of bounds or offside))
• S: (n) referee, ref ((sports) the chief official (as in boxing or American football) who is expected to ensure fair play)
• S: (n) scorekeeper, scorer (an official who records the score during the progress of a game)
• S: (n) starter, dispatcher (the official who signals the beginning of a race or competition)
• S: (n) timekeeper, timer ((sports) an official who keeps track of the time elapsed)
• S: (n) umpire, ump (an official at a baseball game)
• direct hypernym / inherited hypernym / sister term

Adjective

• S: (adj) official (having official authority or sanction) "official permission"; "an official representative"
• S: (adj) official (of or relating to an office) "official privileges"
• S: (adj) official (verified officially) "the election returns are now official"
• similar to
• S: (adj) confirmed (having been established or made firm or received the rite of confirmation) "confirmed reservations"; "received confirmed reports of casualties"; "a confirmed Catholic"
• antonym
• W: (adj) unconfirmed [Indirect via confirmed] (not finally established or settled) "an unconfirmed letter of credit"; "unconfirmed rumors"
• S: (adj) official, prescribed (conforming to set usage, procedure, or discipline) "in prescribed order"
• similar to
• derivationally related form
• antonym
• W: (adj) irregular [Indirect via regular] (contrary to rule or accepted order or general practice) "irregular hiring practices"
• S: (adj) official ((of a church) given official status as a national or state institution)