meclonazepam

The story

1. Proto-Indo-European*médʰu
2. Proto-Hellenic*métʰu
3. Ancient Greekμέθυ (méthu)
4. Proto-Indo-European*swel-der.?
5. Ancient Greekῡ̔́λη (hū́lē)
6. GermanMethy
7. Englishmethyl
8. Proto-Indo-European*ǵʰelh₃-
9. Proto-Indo-European*ǵʰl̥h₃rós
10. Proto-Hellenic*kʰlōrós
11. Ancient Greekχλωρός (khlōrós)
12. Englishchloro-
13. Egyptiannṯr
14. Egyptiannṯrj
15. Ancient Greekνῐ́τρον (nĭ́tron)
16. Englishnitro-
17. Englishnitr-
18. Arabicلُبَان (lubān)
19. Proto-Indo-European*yew-
20. Proto-Indo-European*yéwos
21. Proto-Indo-Iranian*yáwas
22. Sanskritयव (yava)bor.?
23. Proto-Austronesian*zawa
24. Proto-Malayo-Polynesian*zawader.?
25. Old Javanesejawa
26. Old JavaneseJawi
27. Javaneseꦗꦮꦶ (jawi)
28. Arabicجَاوَة (jāwa)
29. Arabicـِيّ (-iyy)
30. Arabicجَاوِيّ (jāwiyy)
31. Arabicلُبَان جَاوِيّ (lubān jāwiyy)
32. Catalanbenjuí
33. Middle Frenchbenjoin
34. Englishbenzoin
35. Englishbenzo-
36. Proto-Indo-European*dwóh₁
37. Proto-Indo-European*dwi-
38. Proto-Hellenic*dwi-
39. Ancient Greekδῐ- (dĭ-)
40. Latindi-
41. Englishdi-
42. Proto-Indo-European*né
43. Proto-Indo-European*n̥-
44. Proto-Hellenic*ə-
45. Ancient Greekᾰ̓- (ă-)
46. Proto-Indo-European*gʷeyh₃-
47. Proto-Indo-European*gʷih₃wós
48. Proto-Indo-European*gʷíh₃weti
49. Proto-Hellenic*gʷyṓw-ō
50. Proto-Hellenic*d͏̌ṓwō
51. Ancient Greekζώω (zṓō)
52. Ancient Greekζῶ (zô)
53. Ancient Greekζωή (zōḗ)
54. Frenchazote
55. Englishazote
56. Englishaz-
57. Proto-Afroasiatic*sṗɣ?
58. Proto-Semitic*šabʕ-bor.?
59. Proto-Indo-European*septḿ̥
60. Proto-Hellenic*heptə́
61. Ancient Greekἑπτᾰ́ (heptắ)
62. Frenchhepta-
63. Englishazepine
64. Englishdiazepine
65. English(benzo)diazep(ine)
66. Egyptianjmn
67. Ancient GreekᾸ̓́μμων (Ắmmōn)
68. LatinAmmōn
69. Latinammoniacus
70. Englishammonia
71. Proto-Indo-European*dʰeh₁-
72. Englisham(ide)
73. Englishdiazepam
74. Englishnitrazepam
75. Englishclonazepam
76. English todaymeclonazepam

From me(thyl) + clonazepam.