misaccumulation

The story

1. Proto-Indo-European*mey-?
2. Proto-Indo-European*meyth₂-
3. Proto-Germanic*missaz
4. Proto-Germanic*missa-
5. Proto-West Germanic*missa-
6. Old Englishmis-
7. Middle Englishmys-
8. Englishmis-
9. Proto-Indo-European*h₂éd
10. Proto-Italic*ad
11. Proto-Italic*ad-
12. Latinad-
13. Proto-Indo-European*ḱewh₁-
14. Proto-Indo-European*ḱuh₁mósder.?
15. Latincumulus
16. Latincumulō
17. Latinaccumulō
18. Latinaccumulātiō
19. Middle Frenchaccumulation
20. Latinaccumulātiō
21. Middle Englishacumulacyon
22. Englishaccumulation
23. English todaymisaccumulation

From mis- + accumulation.