Meaning of the word "bubble under the radar" in English

What does "bubble under the radar" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

bubble under the radar

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

Idiom

1.

to be present or active but not widely known or noticed

Example:
The new startup has been bubbling under the radar for months, but now they're ready to launch.
Despite his talent, the artist has been bubbling under the radar, waiting for his big break.
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