Was heißt »wider Erwarten« auf Englisch?

Die Wortverbindung »wider Erwarten« lässt sich wie folgt von Deutsch auf Englisch übersetzen:

expectation (contrary to (all/our) expectations)
expectation (against expectation(s))
against all odds

Synonyme

überraschend:: surprising; unexpected
überraschenderweise:: surprisingly
unerwartet:: unexpected
ungeahnt:: unforeseen; unsuspected
unverhofft:: unexpected
unvorhergesehen:: unexpected; unforeseen

Antonyme

erwartungsgemäß:: according to expectation; as expected

Englische Beispielsätze

She triumphed against all odds.
He got what he wanted against all odds.
A sense of expectation is hanging in the air.
Against all expectations, we became good friends.
The wonderful performance of this actress exceeded all expectations.
Against all expectations, the Apollo spacecraft made it safely back to Earth.
Her answer corresponds to my expectation.
His heart bounded with expectation.
It will prove to be up to expectation.
It fell short of my expectation.