supertastic

The story

1. Proto-Indo-European*úp
2. Proto-Indo-European*upér
3. Proto-Italic*super
4. Latinsuper
5. Latinsuper-
6. Englishsuper-
7. Proto-Indo-European*bʰeh₂-
8. Proto-Indo-European*bʰh₂nyéti
9. Proto-Hellenic*pʰáňňō
10. Ancient Greekφαίνω (phaínō)
11. Ancient Greekφαντάζω (phantázō)
12. Ancient Greekφανταστικός (phantastikós)
13. Late Latinphantasticus
14. Middle Frenchfantastique
15. Englishfantastic
16. English todaysupertastic

From super- + -tastic.