resourceless

The story

1. Proto-Italic*wre-
2. Latinre-
3. Old Frenchre-
4. Middle Englishre-
5. Englishre-
6. Proto-Indo-European*upó
7. Proto-Italic*supo
8. Latinsub
9. Latinsub-
10. Proto-Indo-European*h₃reǵ-
11. Proto-Indo-European*h₃réǵeti
12. Proto-Italic*regō
13. Latinregō
14. Latinsubrigō
15. Latinsurrigō
16. Latinsurgere
17. Old Frenchsourdre
18. Old Frenchsours
19. Middle Englishsours
20. Englishsource
21. Englishresource
22. Proto-Indo-European*lewh₁-
23. Proto-Indo-European*lewHs-
24. Proto-Germanic*leusaną
25. Proto-Germanic*lausaz
26. English todayresourceless

From resource + -less.