underemotional

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*h₁éǵʰ
13. Proto-Indo-European*h₁éǵʰs
14. Proto-Italic*eks
15. Latinex
16. Latinex-
17. Proto-Indo-European*m(y)ewh₁-
18. Proto-Indo-European*m(y)owh₁éyeti
19. Proto-Italic*moweō
20. Latinmoveō
21. Latinēmoveō
22. Vulgar Latin*exmovēre
23. Old Frenchesmovoir
24. Middle Frenchesmouvoir
25. Middle Frenchemotion
26. Englishemotion
27. Proto-Indo-European*h₂el-
28. Proto-Indo-European*h₂élisder.?
29. Englishemotional
30. English todayunderemotional

From under- + emotional.