unofficially

US /ˌʌn.əˈfɪʃ.əl.i/
UK /ˌʌn.əˈfɪʃ.əl.i/
"unofficially" picture
1.

secara tidak resmi

without official authorization or approval; not formally acknowledged.

:
He was unofficially appointed to the position.
Dia secara tidak resmi diangkat ke posisi itu.
The news spread unofficially through the office.
Berita itu menyebar secara tidak resmi di seluruh kantor.