Most sharp way in which regular hit revolutionary (8)
I believe the answer is:
smartest
'most sharp' is the definition.
('smart' can be similar in meaning to 'sharp')
'way in which regular hit revolutionary' is the wordplay.
'way' becomes 'st' (abbreviation for street).
'in which' means one lot of letters goes inside another.
'regular hit revolutionary' becomes 'martes' (I am not sure about this - if you are sure you should believe this answer much more).
'st' enclosing 'martes' is 'SMARTEST'.
Can you help me to learn more?
(Other definitions for smartest that I've seen before include "Most intelligent or most stylish" , "Cleverest; most chic" , "Most wise" , "Brightest or best dressed" , "Extremely bright" .)