FIFA

The story

1. Proto-Indo-European*bʰeydʰ-
2. Proto-Indo-European*bʰeydʰós
3. Proto-Italic*feiðos
4. Latinfoedus, foederis
5. Latinfoederō
6. Latinfoederātiōnem
7. Frenchfédération
8. Proto-Indo-European*h₁én
9. Proto-Indo-European*h₁n̥tér
10. Proto-Italic*n̥ter
11. Latininter
12. Frenchinter-
13. Proto-Indo-European*ǵenh₁-
14. Proto-Indo-European*ǵénh₁tis
15. Proto-Italic*gnātiō
16. Latinnātiō
17. Old Frenchnacion
18. Middle Frenchnation
19. Frenchnation
20. Proto-Indo-European*h₂el-
21. Proto-Indo-European*h₂élisder.?
22. Frenchnational
23. Frenchinternational
24. Frenchinternationale
25. Proto-Indo-European*h₂éd
26. Proto-Italic*ad
27. Proto-Italic*ad-
28. Latinad-
29. Proto-Indo-European*sekʷ-
30. Proto-Indo-European*sokʷéh₂
31. Proto-Indo-European*sokʷh₂ṓy
32. Proto-Indo-European*sokʷyós
33. Proto-Italic*sokjos
34. Latinsokios
35. Latinsocius
36. Latinsociō
37. Latinassociāre
38. Frenchassocier
39. Frenchassociation
40. Proto-Indo-European*ped-
41. Proto-Indo-European*pṓds
42. Proto-Germanic*fōts
43. Proto-West Germanic*fōt
44. Old Englishfōt
45. Middle Englishfot
46. Proto-Indo-European*bʰel-
47. Proto-Germanic*balluz
48. Old English*beall
49. Middle Englishbal
50. Middle Englishfotbal
51. Englishfootbal
52. Frenchfootball
53. Englishassociation football
54. Frenchfootball association
55. FrenchFIFAo
56. English todayFIFA

Orthographic borrowing from French FIFA.