unofficial
1. [ adjective ] not having official authority or sanction
Examples:

"a sort of unofficial mayor" "an unofficial estimate" "he participated in an unofficial capacity"

Related terms: official informal unauthorized unsanctioned drumhead unauthorised unauthorized
2. [ adjective ] not officially established
Examples:

"the early election returns are unofficial"

Related terms: unconfirmed
Similar spelling:   unofficially
  unifacial
  unvoiced
  unaffixed