eupepsyn.
Etymology: Anglicized form of eupepsia n.
the world > health and disease > [noun] > good health > of specific parts of body
1721–1800 in N. Bailey
1860 R. G. Mayne Eupepsia, old term for good digestion: eupepsy.
This entry has not yet been fully updated (first published 1891; most recently modified version published online March 2018).