Word of the Day from M-W: oneiric \oh-NYE-rik\
of or relating to dreams, dreamy

The notion of using the Greek noun "oneiros" (meaning "dream") to form the English adjective "oneiric" wasn't dreamed up until the mid-19th century. But back in the early 1600s, linguistic dreamers came up with a few "oneiros" spin-offs, giving English "oneirocriticism," "oneirocritical," and "oneirocritic" (each referring to dream interpreters or interpretation). The surge in "oneiros" derivatives at that time may have been fueled by the current interest among English scholars in _Oneirocritica_, a book about dream interpretation by 2nd century Greek soothsayer Artemidorus Daldianus.