1.
If you describe an artist or sports player as ~, you mean that people have not recognized their talent or ability. (JOURNALISM)
They are inviting talented, but ~ film-makers to submit examples of their work.
= unsung
? acclaimed
ADJ: usu ADJ n
2.
If you describe something that happens as ~, you mean that you did not expect it, because nobody mentioned it beforehand. (WRITTEN)
...Sandi’s ~ arrival on her doorstep...
The complete reversal of this policy was ~.
ADJ