unofficial
adjective
[ ʌnəˈfɪʃ(ə)l ]
• not officially authorized or confirmed.
• "unofficial reports said that dozens of people were injured"
Similar:
unauthenticated,
unconfirmed,
uncorroborated,
unsubstantiated,
unratified,
undocumented,
off the record,
unauthorized,
unsanctioned,
uncertified,
informal,
casual,
unaccredited,
wildcat,
