deterioration

1. A symptom of reduced quality or strength (synset 114585210)
   is a type of: decay - an inferior state resulting from the process of decaying
   subtypes:

   • corrosion - a state of deterioration in metals caused by oxidation or chemical action
   • desolation, devastation - the state of being decayed or destroyed
   • decrepitude, dilapidation - a state of deterioration due to old age or long use
   • wear - impairment resulting from long use
   same as: impairment
2. Process of changing to an inferior state (synset 113485407)
   is a type of: decline, diminution - change toward something smaller or lower
   subtypes: drop-off, falling off, falloff, slack, slump - a noticeable deterioration in performance or quality
   same as: declension, decline in quality, worsening

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