A facut o faptura nemaipomenita si i-a uimit pe toti.
He did something extraordinary and amazed everyone.
Mancarea de la acel restaurant era pur si simplu nemaipomenita.
The food at that restaurant was simply extraordinary.
E nemaipomenit cum reuseste sa faca totul singur.
It's unbelievable how he manages to do everything on his own.