How to Say "to halt" in Spanish
The most common Spanish word for “to halt” is “arrestar” — use 'arrestar' when you want to stop the progress or advancement of something, like a disease or a project..
arrestar
ah-rrehs-TAHR/a.resˈtaɾ/

Examples
Los médicos intentaron arrestar el avance de la enfermedad.
The doctors tried to halt the advance of the disease.
El gobierno debe arrestar el deterioro del sistema educativo.
The government must check the deterioration of the educational system.
Formal Usage
This meaning is usually found in written reports, scientific papers, or very formal speeches. In everyday conversation, you would typically use 'parar' or 'detener' instead.
detenerme
/deh-teh-NEHR-meh//deteˈneɾme/

Examples
Necesito detenerme un momento para beber agua.
I need to stop myself for a moment to drink water.
No pude detenerme antes de chocar contra la pared.
I couldn't stop myself before hitting the wall.
¿Por qué no quieres detenerme cuando hablo demasiado?
Why don't you want to stop me when I talk too much?
Reflexive Action
The 'me' at the end tells you that 'I' am doing the action to 'myself'. If you want someone else to stop, you drop the 'me' and use a different pronoun, like 'detenerte' (to stop yourself, singular).
Placement Rule
When using an infinitive (the base form of the verb, like 'detener'), you can attach the pronoun ('me') to the end, or you can place it before the conjugated verb: 'Quiero detenerme' is the same as 'Me quiero detener'.
Forgetting the Reflexive
Mistake: “Voy a detener el coche.”
Correction: Voy a detenerme (if you mean stopping *yourself*, not the car). 'Detener' without the 'me' usually means stopping an outside object or person.
Stopping a process vs. Stopping yourself
Related Translations
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