astonishingly
Definitions
In a manner that causes great surprise or amazement.
To a degree that is difficult to believe.
Examples
The team performed astonishingly well despite the lack of preparation.
She was astonishingly calm even when the situation turned chaotic.
The price of the vintage car was astonishingly high at the auction.
Synonyms
amazingly astoundingly incredibly remarkably startlingly extraordinarily stunningly
Antonyms
ordinarily predictably normally unremarkably expectedly commonly averagely