underconsume

The story

1. Proto-Indo-European*h₁én
2. Proto-Indo-European*h₁entér
3. Proto-Indo-European*h₂én
4. Proto-Indo-European*dʰeh₁-?
5. Proto-Indo-European*(H)n̥dʰí
6. Proto-Indo-European*(H)n̥dʰér
7. Proto-Germanic*under
8. Proto-West Germanic*undar
9. Old Englishunder-
10. Middle Englishunder-
11. Englishunder-
12. Proto-Indo-European*ḱe?
13. Proto-Indo-European*ḱóm
14. Proto-Italic*kom
15. Proto-Italic*kom-
16. Latincon-
17. Proto-Indo-European*upó
18. Proto-Italic*supo
19. Latinsub
20. Latinsub-
21. Proto-Indo-European*h₁em-
22. Proto-Indo-European*h₁émeti
23. Proto-Italic*emō
24. Latinemō
25. Latinsūmō
26. Latincōnsūmō
27. Old Frenchconsumer
28. Middle Englishconsumen
29. Englishconsume
30. English todayunderconsume

From under- + consume.