Douglas Harper's Etymology Dictionary
Wiktionary
prelapsarian
a. Of, or relating to the period of innocence before the Fall of man; innocent, unspoiled.
WordNet
prelapsarian
adj. of or relating to the time before the Fall of Adam and Eve
Usage examples of "prelapsarian".
Before the arrival of Gulliver, the Houyhnhnms, ideal but also funny, arrogant, and naive, were prelapsarian.