nonmenopausal

The story

1. Proto-Indo-European*né
2. Proto-Germanic*ne
3. Proto-Indo-European*ís?
4. Proto-Indo-European*h₁óynos
5. Proto-Germanic*ainaz
6. Proto-Germanic*nainaz
7. Proto-West Germanic*nain
8. Old Englishnān
9. Middle Englishnon
10. Old Englishnān
11. Old Englishnān-
12. Middle Englishnon-
13. Englishnon-
14. Proto-Indo-European*med-
15. Proto-Indo-European*meh₁-?
16. Proto-Indo-European*mḗh₁n̥s
17. Proto-Hellenic*méns
18. Ancient Greekμήν (mḗn)
19. Frenchméno-
20. Ancient Greekπαύω (paúō)
21. Ancient Greekπαῦσις (paûsis)
22. Latinpausa
23. Frenchménopause
24. Englishmenopause
25. Proto-Indo-European*h₂el-
26. Proto-Indo-European*h₂élisder.?
27. Englishmenopausal
28. English todaynonmenopausal

From non- + menopausal.