1. Not having official authority or sanction
   "a sort of unofficial mayor"; "an unofficial estimate"; "he participated in an unofficial capacity" 
2. Not officially established
   "the early election returns are unofficial"

See also: drumhead, informal, loose, summary, unauthorised [Brit], unauthorized, unconfirmed, unofficially, unsanctioned, wildcat

Antonym: official

Encyclopedia: Unofficial

• chloramphenicol
• Chloranthaceae
• Chloranthus
• chlorate
• chlordiazepoxide
• chlorella
• chlorenchyma
• chlorhexidine
• chloric
• chloric acid
• chloride
• chloride of lime
• chlorinate
• chlorinated lime
• chlorination
• chlorine
• chlorine dioxide
• chlorine water
• chlorinity
• Chloris
• Chloris gayana
• Chloris truncata
• chlorite
• chloro-
• chloroacetophenone