This is the 16062nd most frequent Russian word.
радикального
Radical.
In this sentence, "радикального" describes the significant and fundamental nature of the proposed reform, emphasizing its extensive impact.
Он предложил радикального реформу системы образования.
He proposed a radical reform of the educational system.
Here, "радикального" modifies "изменение," highlighting the drastic and comprehensive nature of the change being suggested or required.
Для исправления ситуации требуется радикальное изменение подхода.
To rectify the situation, a radical change in approach is needed.
"Радикальными" is used as an adjective to describe the transformed characteristic of the person’s views, indicating that they have become more extreme or fundamental.