unrecognized

US /ʌnˈrek.əɡ.naɪzd/
UK /ʌnˈrek.əɡ.naɪzd/
1.

không được công nhận

If something is unrecognized, people do know what it is, especially because they have not seen, heard, or experienced it before:

:
The illness often goes unrecognized and untreated.