overconsumption

The story

1. Proto-Indo-European*úp
2. Proto-Indo-European*upér
3. Proto-Germanic*uber
4. Old Englishofer-
5. Middle Englishover-
6. Englishover-
7. Proto-Indo-European*ḱe?
8. Proto-Indo-European*ḱóm
9. Proto-Italic*kom
10. Proto-Italic*kom-
11. Latincon-
12. Proto-Indo-European*upó
13. Proto-Italic*supo
14. Latinsub
15. Latinsub-
16. Proto-Indo-European*h₁em-
17. Proto-Indo-European*h₁émeti
18. Proto-Italic*emō
19. Latinemō
20. Latinsūmō
21. Latincōnsūmō
22. Latincōnsūmptiō
23. Old Frenchconsumpcion
24. Middle Englishconsumpcioun
25. Englishconsumption
26. English todayoverconsumption

From over- + consumption.