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In the entire world, Seongmin (성민 , Seongmin ) is quite a common principally masculine, but very seldom girly first name. The forename Seongmin is habitual in South Korea, where it is quite a common primarily boy's, but scarcely girly name, and the United States, where it is an extremely rare gender-neutral name. Much less frequently, Seongmin is the last name as well as the forename.