extremeliest 

more extreme than ever, used when u need to express an outrageous amount of extreme-ness

you are the extremeliest person ever! this is the extremeliest the heats been lately.

extremeliest by betty_boop July 16, 2008

extremenist 

Extremenist/extremenism is extreme feminism. Forcing feminist opinions on people who couldn't care less.

Extremenists are becoming a major issue in society with their violence.

extremenist by ShhMoaten January 3, 2018