This is the 523rd most frequent Polish word.
niezwykle
Extremely; exceptionally.
Adjective intensifier, meaning 'extremely' or 'very'.
Ten film był niezwykle interesujący.
This movie was extremely interesting.
Adverb, emphasizing the manner in which an action is done.
Udało się to zrobić niezwykle łatwo.
It was done in an unusually easy manner.
Adjective intensifier, focusing on the remarkable degree of the attribute.