plural kissing cousins
old-fashioned
: a person and especially a relative who you know well enough to kiss in a formal way when you meet
—often used figuratively to describe two things that are similar or closely related
He says politics and show business are kissing cousins.
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“Kissing cousin.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/kissing%20cousin. Accessed 22 Jun. 2026.
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