unsuccessfully
US /ˌʌn.səkˈses.fəl.i/
UK /ˌʌn.səkˈses.fəl.i/

1.
tanpa hasil, gagal
without success
:
•
He tried unsuccessfully to open the locked door.
Dia mencoba tanpa hasil membuka pintu yang terkunci.
•
The team searched unsuccessfully for the missing hiker.
Tim mencari tanpa hasil pendaki yang hilang.