unsugary

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*ḱorkeh₂
9. Proto-Indo-Iranian*ćárkaraH
10. Proto-Indo-Aryan*śárkaraH
11. Sanskritशर्क॑रा (śárkarā)
12. Middle Persian𐭱𐭪𐭥 (šakar)
13. Arabicسُكَّر (sukkar)
14. Old Italianzucchero
15. Old Frenchçucre
16. Middle Englishsugre
17. Englishsugar
18. Englishsugary
19. English todayunsugary

From un- + sugary.