radical
/rah-dee-KAHL/
radical

A drastic and complete change from a dry desert to a lush forest represents a radical transformation.
radical(adjective)
radical
?meaning drastic or complete
,drastic
?referring to a major change
fundamental
?referring to the core or root of something
📝 In Action
Necesitamos un cambio radical en nuestra estrategia.
B1We need a radical change in our strategy.
Fue una decisión radical, pero necesaria.
B1It was a drastic decision, but a necessary one.
💡 Grammar Points
One Size Fits All
This word doesn't change based on gender. You can use it with both 'masculine' and 'feminine' things without changing the ending: 'un cambio radical' or 'una idea radical'.
❌ Common Pitfalls
Avoid 'Radicala'
Mistake: "una decisión radicala"
Correction: una decisión radical
⭐ Usage Tips
Describing People
When you call a person 'radical', it usually implies they have very extreme views, often in politics or sports.

The root of a plant illustrates the concept of a radical, representing the base or origin.
📝 In Action
En matemáticas, el signo de la raíz se llama radical.
C1In mathematics, the root sign is called a radical.
Para conjugar el verbo, primero identifica el radical.
C1To conjugate the verb, first identify the root.
💡 Grammar Points
The 'Root' of the Matter
In language learning, the 'radical' is the part of the word that stays the same while the endings change.
✏️ Quick Practice
💡 Quick Quiz: radical
Question 1 of 1
If someone suggests a 'cambio radical', what do they mean?
📚 More Resources
Frequently Asked Questions
Is 'radical' used the same way in Spanish as in English?
Mostly, yes! It can mean 'drastic' or 'extreme' in both languages. However, in English, 'radical' is sometimes used as slang for 'cool' (especially in the 80s/90s), but this slang use does not exist in Spanish.
Does 'radical' change for male and female nouns?
No, it is the same for both. You say 'un hombre radical' and 'una mujer radical'.