IPA: /ˈrædɪkəl.nəs/
KK: /ˈrædɪkəlnəs/
The quality or state of being very different from the usual or traditional; often associated with extreme changes or ideas.
The radicalness of her ideas challenged the conventional beliefs of the community.
Radicalness → It is formed from "radical" (from Latin "radicalis", meaning relating to the root) and "-ness" (a suffix indicating a state or quality). The word "radicalness" refers to the quality of being fundamental or relating to the root of something.
Think of 'radical' as relating to the 'root' of an idea, and '-ness' indicating a state. This helps you remember that 'radicalness' means the quality of being fundamental or essential.