Here are some examples of how "unofficial" can be used:
* Unofficial results: Results from an election that have not been officially verified by election officials.
* Unofficial transcript: A copy of a transcript that is not provided by the official institution.
* Unofficial meeting: A meeting that is not scheduled or approved by the organization's leadership.
* Unofficial guide: A guide that is not written by the organization or endorsed by the official body.
* Unofficial spokesperson: Someone who speaks on behalf of a group or organization but is not authorized to do so.
In essence, "unofficial" implies that something is not part of the official record or does not carry the weight of official approval.