Tristegenic

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Tristegenic refers to a system, member, or other whose origin came from sad and negative emotions.

"Triste" is French for "sad".

Related Terms
Sadorma describes a member who originates from the emotion sadness, or the concept of sadness.

Heureuxgenic may be considered a complementary antonym.

Rae-genic and colèregenic are origins related to anger.