The term '''promiscuous''' in the old English meant mixed, blended, of haphazard.<ref>https://www.merriam-webster.com/dictionary/promiscuous</ref> According to the Oxford English Dictionary, it referred to
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{{cquote|demonstrating or implying an undiscriminating or unselective approach; indiscriminate or casual<ref>Oxford English Dictionary online, retrieved November 13, 2017</ref>}}
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However, the definition of this word has evolved to often mean that a person in involved with multiple, mixed sexual relationships. When "promiscuous" or "promiscuity" is used, it typically refers to this sort of immoral behavior.