Also means
to damage
Usage Note
Détériorer is used both transitively ('the damp damaged the walls') and reflexively — se détériorer means 'to worsen' or 'to deteriorate' on its own. The reflexive form is very common in news contexts: la situation se détériore. The related noun is la détérioration.
Examples
"L'humidité détériore les murs."
Natural Translation
Moisture damages the walls.

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