inequidistant

The story

1. Proto-Indo-European*né
2. Proto-Indo-European*n̥-
3. Proto-Italic*n̥-
4. Latinin-
5. Middle Englishin-
6. Englishin-
7. Proto-Italic*aikʷos?
8. Old Latinaiquos
9. Latinaequus
10. Proto-Indo-European*dwóh₁
11. Proto-Indo-European*trísinflu.
12. Proto-Indo-European*d(w)is-
13. Proto-Italic*dis-
14. Latindis-
15. Proto-Indo-European*steh₂-
16. Proto-Indo-European*sth₂éh₁yeti
17. Proto-Italic*staējō
18. Proto-Italic*staēō
19. Latinstō
20. Latindistō
21. Latinaequidistō
22. Late Latinaequidistāns
23. Middle Frenchéquidistant
24. Englishequidistant
25. English todayinequidistant

From in- + equidistant.