"Drad" is an adjective, or sometimes an exclamation, popularized by the Nebari. It's closest counterparts in English are "cool" or "wild" -- however, as translator microbes often have trouble with slang words "drad" spread into the vernacular of other cultures. It is widely used in the Uncharted Territories, and in later years spread even outside of the Delta Quadrant.
As an adjective, the word could be modified to become comparative. In this way, something could become the "draddest".
Drad is heard in Farscape.