The quality or state of falling away, declining, or decaying; gradual diminishment or deterioration.
From the Latin 'decido' (to fall down, decline) plus the suffix '-ence.' The term is rare in modern English but appears in philosophical or botanical contexts.
While 'decadence' (moral decline) is famous, its root cousin 'decidence' is almost extinct—showing how language naturally selects which words survive based on how useful they are!
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