How to Say "prevention" in Spanish
The Spanish word for “prevention” is “prevención” — A2 level. This is a very common word in everyday Spanish.

Examples
La prevención es la mejor medicina.
Prevention is the best medicine.
Necesitamos nuevas medidas de prevención de incendios.
We need new fire prevention measures.
Actuó con mucha prevención para evitar el error.
He acted with great precaution to avoid the mistake.
The '-ción' Rule
Almost every Spanish word ending in '-ción' is feminine. This means you should always use 'la' or 'una' with it (la prevención).
Using 'de' for Clarity
To specify what you are preventing, just add 'de' plus the noun. For example: 'prevención de enfermedades' (prevention of diseases).
Avoid using 'el'
Mistake: “el prevención”
Correction: la prevención (it's a feminine word).
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