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Grammatical Rule: Diptotes (ممنوع من الصرف)
Definition: A diptote (in Arabic: mamnūʿ min al-ṣarf) is a noun that does not take tanwīn and is not declined with a kasrah, even in the genitive case (حالة الجر). Instead, it takes a fatḥah in both the genitive case and the accusative case (حالة النصب)—unless it is defined by al- or is part of a noun-noun co…
