preconsume

The story

1. Proto-Indo-European*per-
2. Proto-Indo-European*preh₂-
3. Proto-Indo-European*préh₂i?
4. Proto-Italic*prai
5. Proto-Italic*prai-
6. Latinprae-
7. Middle Englishpre-
8. Englishpre-
9. Proto-Indo-European*ḱe?
10. Proto-Indo-European*ḱóm
11. Proto-Italic*kom
12. Proto-Italic*kom-
13. Latincon-
14. Proto-Indo-European*upó
15. Proto-Italic*supo
16. Latinsub
17. Latinsub-
18. Proto-Indo-European*h₁em-
19. Proto-Indo-European*h₁émeti
20. Proto-Italic*emō
21. Latinemō
22. Latinsūmō
23. Latincōnsūmō
24. Old Frenchconsumer
25. Middle Englishconsumen
26. Englishconsume
27. English todaypreconsume

From pre- + consume.