unofficially

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

secara tidak rasmi

without official authorization or approval; not formally acknowledged.

:
He was unofficially appointed to the position.
Dia dilantik secara tidak rasmi ke jawatan itu.
The news spread unofficially through the office.
Berita itu tersebar secara tidak rasmi di seluruh pejabat.