funtastic

The story

1. Englishfun
2. Proto-Indo-European*bʰeh₂-
3. Proto-Indo-European*bʰh₂nyéti
4. Proto-Hellenic*pʰáňňō
5. Ancient Greekφαίνω (phaínō)
6. Ancient Greekφαντάζω (phantázō)
7. Ancient Greekφανταστικός (phantastikós)
8. Late Latinphantasticus
9. Middle Frenchfantastique
10. Englishfantastic
11. English todayfuntastic

Blend of fun + fantastic.