unaesthetic

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*h₂ew-
9. Proto-Indo-European*dʰeh₁-
10. Proto-Indo-European*h₂ewis-dʰh₁
11. Proto-Hellenic*awistʰomai
12. Ancient Greekαἰσθάνομαι (aisthánomai)
13. Ancient Greekαἴσθησῐς (aísthēsĭs)
14. Ancient Greekαἰσθητικός (aisthētikós)
15. Latinaesthēticus
16. GermanÄsthetik
17. New Latinaesthēticu
18. Frenchesthétique
19. Englishaesthetic
20. English todayunaesthetic

From un- + aesthetic.