With semantic femininity, a word does not need a final tāʾ. Its reference or conventional use identifies it as feminine. The book’s example is زَيْنَبُ.
Because Zaynab is a woman’s proper name, it combines proper-name status with semantic femininity and is normally a diptote.
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Causes of Diptote Status — Femininity and Its Conditions
With semantic femininity, a word does not need a final tāʾ. Its reference or conventional use identifies it as feminine. The book’s example is زَيْنَبُ.
Because Zaynab is a woman’s proper name, it combines proper-name status with semantic femininity and is normally a diptote.