eticlopride

The story

1. Proto-Indo-European*h₂eydʰ-
2. Proto-Hellenic*áitʰō
3. Ancient Greekαἴθω (aíthō)
4. Ancient Greekᾱ̓ήρ (āḗr)influ.?
5. Ancient Greekαἰθήρ (aithḗr)
6. Latinaethēr
7. GermanÄther
8. GermanEther
9. Proto-Indo-European*swel-der.?
10. Ancient Greekῡ̔́λη (hū́lē)
11. GermanEthy
12. Englishethyl
13. Proto-Indo-European*ǵʰelh₃-
14. Proto-Indo-European*ǵʰl̥h₃rós
15. Proto-Hellenic*kʰlōrós
16. Ancient Greekχλωρός (khlōrós)
17. Englishchloro-
18. Latinsulpur
19. Latinsulfur
20. Latinsulphur
21. Anglo-Normansulfre
22. Middle Englishsulphur
23. Englishsulf(ur)
24. Egyptianjmn
25. Ancient GreekᾸ̓́μμων (Ắmmōn)
26. LatinAmmōn
27. Latinammoniacus
28. Englishammonia
29. Proto-Indo-European*dʰeh₁-
30. Englishamide
31. Englishsulfamide
32. Ancient Greekῡ̔́λη (hū́lē)
33. Englishsul(famoyl)
34. Proto-Indo-European*péh₂wr̥
35. Proto-Hellenic*pāwər
36. Ancient Greekπῦρ (pûr)
37. Ancient Greekπῠρρός (pŭrrhós)
38. GermanPyrro
39. Englishpyrrole
40. Englishpyrrolidine
41. Englishpyr(rolidinyl)
42. Arabicلُبَان (lubān)
43. Proto-Indo-European*yew-
44. Proto-Indo-European*yéwos
45. Proto-Indo-Iranian*yáwas
46. Sanskritयव (yava)bor.?
47. Proto-Austronesian*zawa
48. Proto-Malayo-Polynesian*zawader.?
49. Old Javanesejawa
50. Old JavaneseJawi
51. Javaneseꦗꦮꦶ (jawi)
52. Arabicجَاوَة (jāwa)
53. Arabicـِيّ (-iyy)
54. Arabicجَاوِيّ (jāwiyy)
55. Arabicلُبَان جَاوِيّ (lubān jāwiyy)
56. Catalanbenjuí
57. Middle Frenchbenjoin
58. Englishbenzoin
59. Englishbenzo-
60. Englishbenz-
61. Englishamide
62. English(benzam)ide
63. Englishsulpiride
64. English todayeticlopride

From ethy(l) + chlo(ro)- + -pride (“sulpiride derivative”).