prearrange

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*h₂éd
10. Proto-Italic*ad
11. Proto-Italic*ad-
12. Latinad-
13. Old Frencha-
14. Proto-Indo-European*(H)rek-
15. Proto-Celtic*reketi
16. Gaulish*rekosbor.?
17. Proto-Indo-European*h₃reǵ-
18. Proto-Germanic*rinkaną
19. Proto-Germanic*rankaz
20. Frankish*rankbor.?
21. Vulgar Latin*rencus
22. Old Frenchreng
23. Old Frenchrengier
24. Old Frencharangier
25. Middle Englisharengen
26. Englisharrange
27. English todayprearrange

From pre- + arrange.