\ ˈwü-ˌwü
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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
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“Woo-woo.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/woo-woo. Accessed 5 Mar. 2021.
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The first known use of woo-woo was in 1992
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