(sports) officiated by players, on the "honor system", rather than by an outside observer such as a referee.

(baseball) A completed batting opportunity that did not result in a base on balls, hit-by-pitch, sacrifice fly, sacrifice bunt, or interference or obstruction.

(law) A person who voluntarily, and without request or pre-existing legal duty, interjects himself/herself into the affairs of another, then seeks remuneration for services or reimbursement.

(soccer) The official who keeps things at the dugout in order, and displays substitutions and the amount of injury time

(slang, of a relationship) Existing, as evidenced by a relationship status on Facebook or a similar website.

Jointly official, having full official status alongside another official one.

plural of fourth official

Synonym of scorekeeper

(sports) video referee

plural of official at-bat