bubble under
US /ˈbʌb.əl ˈʌn.dər/
UK /ˈbʌb.əl ˈʌn.dər/

1.
hampir sukses, hampir populer
to be almost successful or popular but not quite there yet
:
•
The band has been bubbling under for years, but they haven't had a hit song yet.
Band ini sudah hampir sukses selama bertahun-tahun, tetapi mereka belum punya lagu hit.
•
Her new book is bubbling under, and many critics expect it to be a bestseller soon.
Buku barunya hampir meledak, dan banyak kritikus memperkirakan akan segera menjadi buku terlaris.