presurgically

The story

1. Proto-Indo-European*per-
2. Proto-Indo-European*preh₂-
3. Proto-Indo-European*préh₂i?
4. Proto-Italic*prai
5. Proto-Italic*prai-
6. Latinprae-
7. Middle Englishpre-
8. Englishpre-
9. Proto-Indo-European*ǵʰes-
10. Proto-Indo-European*ǵʰésōr
11. Proto-Hellenic*kʰéhər
12. Ancient Greekχείρ (kheír)
13. Proto-Indo-European*werǵ-
14. Proto-Indo-European*worǵós
15. Proto-Hellenic*worgós
16. Ancient Greekχειρουργός (kheirourgós)
17. Ancient Greekχειρουργῐκός (kheirourgĭkós)
18. Late Latinchīrurgicus
19. Proto-Indo-European*h₂el-
20. Proto-Indo-European*h₂élisder.?
21. Medieval Latincirurgicālis
22. Middle Frenchcirurgica
23. Middle Englishcirurgical
24. Englishsurgical
25. Englishpresurgical
26. Proto-Indo-European*leyg-
27. Proto-Germanic*līką
28. English todaypresurgically

From presurgical + -ly.