This is the 10284th most frequent Portuguese word.
espantosamente
Amazingly; astonishingly.
Here, 'espantosamente' is used as an adverb modifying 'mais rápido', emphasizing the extraordinary nature of his speed.
Ele correu espantosamente mais rápido que todos os outros competidores.
He ran astonishingly faster than all the other competitors.
In this sentence, 'espantosamente' highlights the unexpected and remarkable quality of the decoration's beauty.
A casa foi decorada espantosamente bela para a festa.
The house was astonishingly beautifully decorated for the party.
The word 'espantosamente' serves as an adverb here, describing how impressively well the theory was explained.