This is the 3766th most frequent Spanish word.
radical
"Radical" in Spanish means fundamental, extreme, or relating to the root or origin of something.
Here, 'radicales' is used to describe measures that are fundamental and extreme actions aimed to address significant issues.
El cambio climático requiere medidas radicales para su solución.
Climate change requires radical measures for its solution.
In this case, 'radicales' characterizes ideas that are extreme and deviate significantly from the norm or traditional thinking.
Las ideas radicales del grupo político causaron controversia.
The radical ideas of the political group caused controversy.
Here, 'radical' is used to describe something that is strikingly innovative or outside the mainstream.