A strong feeling of excitement, interest, or eagerness about something.
From Greek *enthousiasmos* ('possessed by a god, inspired'), from *enthous* ('possessed') from *en* ('in') + *theos* ('god'). It originally suggested divine inspiration or madness.
Enthusiasm once meant being so inspired it was like a god had jumped inside you. Even now, someone truly enthusiastic looks a bit 'possessed'—their energy spills out and infects everyone nearby.
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