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Definition of woo–woo
: 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 MoskinExplore M-W
Origin and Etymology of woo–woo
probably from the interjection woo-woo as a conventional representation of an eerie or ghostly sound
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