overemotional

The story

1. Proto-Indo-European*úp
2. Proto-Indo-European*upér
3. Proto-Germanic*uber
4. Old Englishofer-
5. Middle Englishover-
6. Englishover-
7. Proto-Indo-European*h₁éǵʰ
8. Proto-Indo-European*h₁éǵʰs
9. Proto-Italic*eks
10. Latinex
11. Latinex-
12. Proto-Indo-European*m(y)ewh₁-
13. Proto-Indo-European*m(y)owh₁éyeti
14. Proto-Italic*moweō
15. Latinmoveō
16. Latinēmoveō
17. Vulgar Latin*exmovēre
18. Old Frenchesmovoir
19. Middle Frenchesmouvoir
20. Middle Frenchemotion
21. Englishemotion
22. Proto-Indo-European*h₂el-
23. Proto-Indo-European*h₂élisder.?
24. Englishemotional
25. English todayoveremotional

From over- + emotional.