undemanding

The story

1. Proto-Indo-European*né
2. Proto-Indo-European*n̥-
3. Proto-Germanic*un-
4. Proto-West Germanic*un-
5. Old Englishun-
6. Middle Englishun-
7. Englishun-
8. Proto-Indo-European*de
9. Proto-Indo-European*déh₁
10. Proto-Italic*dē
11. Latindē
12. Latindē-
13. Proto-Indo-European*(s)meh₂-
14. Proto-Italic*manus
15. Proto-Indo-European*dʰeh₁-
16. Proto-Indo-European*dʰéh₁t
17. Proto-Italic*manuðō
18. Latinmandō
19. Latindemandāre
20. Old Frenchdemander
21. Middle Englishdemaunden
22. Englishdemand
23. Englishdemanding
24. English todayundemanding

From un- + demanding.