How to Say "worsening" in Spanish
The Spanish word for “worsening” is “deterioro” — B2 level. This is a very common word in everyday Spanish.

Examples
El deterioro de la vieja casa es muy evidente.
The deterioration of the old house is very obvious.
Fumar causa un grave deterioro de los pulmones.
Smoking causes a serious worsening of the lungs.
Debemos evitar el deterioro de nuestras relaciones diplomáticas.
We must avoid the worsening of our diplomatic relations.
Always Masculine
This word is always masculine. You should always use 'el' or 'un' with it (el deterioro, un deterioro).
Noun vs. Action
'Deterioro' is the thing or the state of being bad. If you want to describe the action of getting worse, use the verb 'deteriorar'.
Confusing with 'Daño'
Mistake: “El terremoto causó un deterioro en la pared.”
Correction: El terremoto causó un 'daño' en la pared. Use 'daño' for sudden breaks and 'deterioro' for things that get worse slowly over time.
Related Translations
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