na-adjective
Describes ideas, policies, or movements that advocate for rapid and fundamental change, often in political or social contexts.
彼は急進的な改革を提案した。
He proposed radical reforms.
その政党は急進的
That political party advocates radical policies.
革新的 means 'innovative', focusing on introducing new ideas or methods, while 急進的 emphasizes the speed and fundamental nature of change.
Compound of 急進 (rapid progress) + 的 (-like, -ic). 急進 is from 急 (urgent, rapid) and 進 (advance).