Surprisingly (2,4)
I believe the answer is:
no less
'surprisingly' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for no less that I've seen before include "Phrase ironically used to express admiration" , "as important" , "Appended phrase used to express admiration" , "Bare minimum" , "Phrase used to express admiration - lesson (anag)" .)