aboveground

The story

1. Proto-Indo-European*ud-s-?
2. Proto-Indo-European*h₂u-s-?
3. Proto-Germanic*uz-
4. Proto-West Germanic*uʀ-
5. Old Englishar-
6. Old Englishā-
7. Proto-West Germanic*bi-
8. Proto-Indo-European*upó
9. Proto-Germanic*ub
10. Proto-Germanic*ubanē
11. Proto-West Germanic*obanā
12. Proto-West Germanic*biobanā
13. Old Englishbufan
14. Old Englishabūfan
15. Middle Englishaboven
16. Englishabove
17. Proto-Indo-European*gʰrem-
18. Proto-Germanic*grunduz
19. Proto-West Germanic*grundu
20. Old Englishgrund
21. Middle Englishground
22. Englishground
23. English todayaboveground

From above + ground.