radicalism

radical | American Dictionary

radical
adjective
us/ˈræd·ɪ·kəl/

radicaladjective (SUPPORTING CHANGE)

believing or expressing the belief that there should be great or extreme social, economic, or political change:
White’s political orientation was decidedly liberal, but hardly radical.

radicaladjective (EXTREME)

causing or being an example of great change; extreme:
During bad economic times, radical steps may be necessary to restore the confidence of the consumer.

radically

adverbus/ˈræd·ɪ·kli/
Her views are not radically different from my own.
radical
noun[ C ]
us/ˈræd·ɪ·kəl/

radicalnoun[C] (SUPPORTING CHANGE)

a person who supports great social, economic, or political change

Examples of radical

radical
They were quick, however, to use beads in more excessive and radical ways.
There are approximately 700 phonetic radicals and about 140 semantic radicals currently in use.
Numerous substances are found in nature and in the body that function as protective agents against oxygen-free radicals.
Political parties of the so-called radical opposition boycotted the elections for this reason.
This reorientation, in turn, led to a revision of the concept of error and a radical reappraisal of teacher and learner roles.
The period saw the radical separation of micro- and macro-economics (a separation denoted, paradoxically, as a 'neoclassical synthesis').
We believe that convergence is unlikely any time soon without radical restructuring of global economic growth prospects.
Thus, the radical absence of the phylloxera was yet another way of making the phylloxera visible.
Perhaps the most radical element of the film is that it completely eschews commentary.
The criticism perhaps dignifies our suggestion with the impression that it is more radical that it really is.
The campaign against the radical liberals encountered a number of difficulties.
And they were driven in "radical" directions by their own core values' (p. 358).
Semantic radicals provide a guide to characters' meanings by signaling, in most instances, the semantic category of the whole character.
If not able to be controlled, free radicals generated while seeds are in the desiccated condition will accumulate, especially during prolonged storage under poor conditions.
Nevertheless, lighthouse reform enabled the whigs and radicals to pose as crusaders against local monopolies which the tories sought to perpetuate.
These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.