Synonyms: unofficial
Definition: not having official authority or sanction
Usage: a sort of unofficial mayor; an unofficial estimate; he participated in an unofficial capacity
Similar words: summary, drumhead
Definition: performed speedily and without formality
Usage: a summary execution; summary justice
Similar words: loose, informal
Definition: not officially recognized or controlled
Usage: an informal agreement; a loose organization of the local farmers
Similar words: unauthorised, unauthorized, wildcat
Definition: without official authorization
Usage: an unauthorized strike; wildcat work stoppage
Similar words: unsanctioned
Definition: without explicit official permission
Usage: unsanctioned use of company cars
Synonyms: unofficial
Definition: not officially established
Usage: the early election returns are unofficial
Similar words: unconfirmed
Definition: not finally established or settled
Usage: an unconfirmed letter of credit; unconfirmed rumors