It's Greek to me, this noun, a feeling of extreme happiness & well-being--it's wonderful!
Given that root, it's not surprising that in its original English uses
, it was a medical ... a feeling of well-being or elation; especially : one that is 
groundless,... [DOC] [TLE] Eudaimonia - Wikipedia [PAR] Eudaimonia (Greek:  [eudaimona]), sometimes anglicized as 
eudaemonia or ... Aristotle takes virtue and its exercise to be the most important 
constituent in eudaimonia but acknowledges also the .... Basically, well being (
eudaimonia) is gained by proper development of one's highest and most human
... [DOC] [TLE] Another word for feel | Meaning of feel | Synonyms for feel [PAR] Samples where feel or its synonyms are used according to this definition ...