dropsically

The story

1. Proto-Indo-European*wed-
2. Proto-Indo-European*wódr̥
3. Proto-Hellenic*údōr
4. Ancient Greekῡ̆̔́δωρ (hū̆́dōr)
5. Ancient Greekῠ̔́δρωψ (hŭ́drōps)
6. Latinhydrōps
7. Late Latinhydropisia
8. Old Frenchydropisie
9. Middle Englishidropesie
10. Englishdropsy
11. Proto-Indo-European*h₂el-
12. Proto-Indo-European*h₂élisder.?
13. Englishdropsical
14. English todaydropsically

From dropsical + -ly.