There are various applications of the word "radical" in its adjectival form. Such as, radical feminists, radical politicians, radical ideas, radical terrorists etc. Nowadays, it is widely used to refer to political groups to slam them. My question is, what are its different meanings in different contexts as an adjective?
The oxford dictionary defines radical as:
advocating or based on thorough or complete political or social reform; representing or supporting an extreme section of a political party.
But media often refers to politicians who aren't advocating any change (e.g. Iranians, Saudis, Iraqis). Why and how does that make sense? How is a Muslim scholar from Iran or Saudi Arabia radical when they aren't advocating any change and in fact are trying to protect their own system?