also: ラディカル
Used as a na-adjective to describe ideas, changes, or people that are extreme, fundamental, or revolutionary. Carries a similar nuance to English 'radical'.
He holds radical opinions.
その改革はラジカルすぎて反対が多い。
The reform is too radical and faces a lot of opposition.
The company radically changed its management policy.
He was a student with radical ideas.
The government is pushing forward with radical reforms.