unofficial
adjective
1. not having official authority or sanction
- a sort of unofficial mayor
- an unofficial estimate
- he participated in an unofficial capacity
Similar word(s): unauthorised, unauthorized, drumhead, summary, informal, loose, unauthorised, unauthorized, wildcat, unsanctioned
2. not officially established
- the early election returns are unofficial
Similar word(s): unconfirmed
Sentences with unofficial as an adjective:
- the unofficial results of the ballot
- an unofficial adviser