woo-woo

adjective

ˈwü-ˌwü 

: dubiously or outlandishly mystical, supernatural, or unscientific

And she has written a book … in which she dismisses what she calls "woo-woo spirituality" in favor of some straight talk on living with loss …

—Linda Richman

Energy beams from the eyes certainly sounds like woo-woo stuff …

—Steve Blow

woo-woo noun

One man's woo-woo, of course, is another's deeply held belief system.

—Julia Moskin

Word History

Etymology

probably from the interjection woo-woo as a conventional representation of an eerie or ghostly sound

First Known Use

1992, in the meaning defined above