rudderpost

The story

1. Proto-Indo-European*h₁reh₁-
2. Proto-Indo-European*h₁roh₁-(ye-)-ti
3. Proto-Germanic*rōaną
4. Proto-Germanic*rōþrą
5. Proto-West Germanic*rōþr
6. Old Englishrōþor
7. Middle Englishrother
8. Englishrudder
9. Proto-Indo-European*per-der.?
10. Proto-Indo-European*pér
11. Proto-Indo-European*pró
12. Proto-Indo-European*steh₂-
13. Proto-Indo-European*pr̥-sth₂-i-s
14. Proto-Italic*porstis
15. Proto-Indo-European*h₂ep
16. Proto-Indo-European*h₂epó
17. Proto-Indo-European*h₂pó
18. Proto-Indo-European*steh₂-
19. Proto-Indo-European*h₂pó-sth₂-i-s
20. Proto-Italic*postis
21. Latinpostis
22. Old Englishpost
23. Latinpostis
24. Old Frenchpost
25. Middle Englishpost
26. Englishpost
27. English todayrudderpost

From rudder + post.