adj.1 partly official; rather less than official.
2 (of communications to newspapers etc.) made by an official with the stipulation that the source should not be revealed.
Derivatives:
semi-officially adv.
adj.1 partly official; rather less than official.
2 (of communications to newspapers etc.) made by an official with the stipulation that the source should not be revealed.
Derivatives:
semi-officially adv.
Oxford English vocab. Оксфордский английский словарь. 2012