unofficial
unofficial
adjective
/ˌʌnəˈfɪʃl/
usually before noun
1 ​that does not have permission or approval from somebody in authority
an unofficial agreement/strike
Unofficial estimates put the figure at over two million.
It's one of numerous unofficial Harry Potter websites.
The result for the athlete was an unofficial world best of 2 minutes 27 seconds.
Unofficial reports indicated that up to 10 million people had been made homeless.
Unofficial sources report that four people were killed in the accident
2 ​that is not part of somebody’s official business
The former president paid an unofficial visit to China.
OPPOSITE official
e.g.
/13sardialouge/No. 026 Teacher and Student 恩師と教え子#60001b33bdb0e500001e2614
/13sardialouge/File No. 043 Tetsuya Ida 井田鉄也#634b56f8bdb0e50000594940