Groundbreaking (7)
(Other definitions for revolutionary that I've seen before include "Insurgent - involving dramatic change" , "New" , "French calendar?" , "agitator" , "Innovative" .)
'groundbreaking' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for radical that I've seen before include "One holding strong reformist views" , "Holding extreme political views" , "Basic" , "Political extremist" , "Deep-seated" .)
(Other definitions for edgy that I've seen before include "Jittery" , "Visibly nervous" , "Extremely" , "Sharp in outline" , "Nervous; jumpy" .)