nonbioaccumulative

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*gʷeyh₃-
15. Ancient Greekβῐ́ος (bĭ́os)
16. Ancient Greekβῐο- (bĭo-)
17. Englishbio-
18. Proto-Indo-European*h₂éd
19. Proto-Italic*ad
20. Proto-Italic*ad-
21. Latinad-
22. Proto-Indo-European*ḱewh₁-
23. Proto-Indo-European*ḱuh₁mósder.?
24. Latincumulus
25. Latincumulō
26. Latinaccumulō
27. Latinaccumulātus
28. Middle Englishaccumylaten
29. Englishaccumulate
30. Englishaccumulative
31. Englishbioaccumulative
32. English todaynonbioaccumulative

From non- + bioaccumulative.