nonacademic

The story

1. Proto-Indo-European*né
2. Proto-Germanic*ne
3. Proto-Indo-European*ís?
4. Proto-Indo-European*h₁óynos
5. Proto-Germanic*ainaz
6. Proto-Germanic*nainaz
7. Proto-West Germanic*nain
8. Old Englishnān
9. Middle Englishnon
10. Old Englishnān
11. Old Englishnān-
12. Middle Englishnon-
13. Englishnon-
14. Ancient GreekἈκάδημος (Akádēmos)
15. Ancient GreekἈκαδημία (Akadēmía)
16. Ancient GreekἈκάδημος (Akádēmos)
17. Ancient GreekἈκαδήμεια (Akadḗmeia)
18. Ancient Greekἀκαδημικός (akadēmikós)
19. Medieval Latinacadēmicus
20. Latinacadēmicu
21. Frenchacadémique
22. Englishacademic
23. English todaynonacademic

From non- + academic.