-tastic

English

Etymology tree

Proto-Indo-European *bʰeh₂-der.

Proto-Hellenic *pʰáňňō

Ancient Greek φαίνω (phaínō)

Ancient Greek φαντάζω (phantázō)

Proto-Indo-European *-tis

Ancient Greek -τις (-tis)

Ancient Greek -σῐς (-sĭs)

Proto-Indo-European *-kos

Ancient Greek -κός (-kós)

?

Proto-Indo-European *-tós

Ancient Greek -τος (-tos)

▲

Ancient Greek -κός (-kós)

?

Ancient Greek -τικός (-tikós)

Ancient Greek φανταστικός (phantastikós)bor.

Late Latin phantasticusbor.

Middle French fantastiquebor.

English fantastic

English -tastic

Rebracketing of fantastic.

-tastic (adjective-forming suffix, comparative more -tastic, superlative most -tastic)

(slang, sometimes sarcastic) Fantastic; used to form adjectives conveying praise or celebration.
- 2001, Kevin Smith, Jay and Silent Bob Strike Back, spoken by Whillenholly (Will Ferrell):
  I don't get out to the movies that much, but "Bluntman and Chronic" was blunt-tastic.