bubble under the radar
US /ˈbʌbəl ˈʌndər ðə ˈreɪdɑːr/
UK /ˈbʌbəl ˈʌndər ðə ˈreɪdɑːr/

1.
berkembang di bawah radar, tidak terdeteksi, tidak terlalu dikenal
to be present or active but not widely known or noticed
:
•
The new startup has been bubbling under the radar for months, but now they're ready to launch.
Startup baru ini telah berkembang di bawah radar selama berbulan-bulan, tetapi sekarang mereka siap untuk diluncurkan.
•
Despite his talent, the artist has been bubbling under the radar, waiting for his big break.
Meskipun berbakat, seniman itu telah berkembang di bawah radar, menunggu kesempatan besarnya.