From the Yiddish, taken to mean a promiscuous woman; a slut; a whore. Very similar to the Yiddish term 'koorvah', although generally understood to be somewhat less severe in nature, in that koorvahs do "it" for money, whereas nafkas more often seek physical or emotional gratification.

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From Yiddish language, it means very ambitious woman, likes to party, an extrovert. Makes great meals, likes to travel. Knows art and has taste for estetic works. Great smile.