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Webster 1913 Edition
Inofficial
In′of-fi′cial
,Adj.
 Not official; not having official sanction or authority; unofficial; not according to the forms or ceremony of official business; 
as, 
. inofficial 
intelligence
Syn. – Private; informal; unwarranted; unauthorizod; irregular; unceremonious; unprofessional. 
Webster 1828 Edition
Inofficial
INOFFI'CIAL
,Adj.
  Pinckney and Marshall would not make inofficial visits to discuss official business.