primordial:

going back to the earliest stage; fundamental, basic

What primordial earth would have looked like.

A caveman is primordial.

utopian:

founded upon a visionary view of an ideal world; idealistic

Everyone would be happy and equal in a utopian society.

nefarious:

wicked, depraved, deprived of moral standards

A villian is nefarious.The devil would also be considered nefarious.

viscous:

gummy, sticky, gluey

Glue is viscous.This bird is covered in a viscous substance.

verdant:

green in tint or color

These fields are verdant—green and lush.

eulogy:

a formal state of commendation; high praise.

Eulogies are often given at funerals—the person giving the eulogy usually praises the deceased.