Official
Part of speech: adjective
Definition: Of or pertaining to an office or public trust Derived from the proper office or officer, or from the proper authority; made or communicated by virtue of authority Approved by authority; authorized. sanctioned by the pharmacopoeia; appointed to be used in medicine; officinal Discharging an office or function. Relating to an office; especially, to a subordinate executive officer or attendant. Relating to an ecclesiastical judge appointed by a bishop, chapter, archdeacon, etc., with charge of the spiritual jurisdiction.
Part of speech: noun
Definition: An office holder invested with powers and authorities. A person responsible for applying the rules of a game or sport in a competition.
Example sentence: Artists - musicians, painters, writers, poets - always seem to have had the most accurate perception of what is really going on around them, not the official version or the popular perception of contemporary life.
Semiofficial
Part of speech: adjective
Definition: Bearing some but not all the power of being official. As a semioffical opinion that is offered as probably correct and accurate but may be overturned on review and replaced by an official statement.