(obsolete) Obliging, attentive, eager to please. / Offensively intrusive or interfering in offering advice and services.

The quality of being officious

in an officious manner

plural of officiousness

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.

An office holder, a person holding an official position in government, sports, or other organization.

In an official manner; according to official rules or regulations. / (slang) Thoroughly, completely.

(intransitive, transitive) To perform the functions of some office. / (intransitive, transitive, sports) To serve as umpire or referee.

A person appointed to office

present participle of officiate.