● In an adjectival phrase, when the noun described is a non-rational plural, its adjective is generally feminine singular.
● Arabic grammar also permits a feminine plural or broken plural adjective with a non-rational plural. For example:
○ Open doors: -> أَبْوَابٌ مَفْتُوحَةٌ (مَفْتُوحَةٌ is a feminine singular adjective).
○ Purified pages/scriptures: -> صُحُفٌ مُطَهَّرَةٌ.
○ A limited number of days: -> أَيَّامٌ مَعْدُودَةٌ or أَيَّامٌ مَعْدُودَاتٌ (a feminine plural adjective).
○ Known months: -> أَشْهُرٌ مَعْلُومَاتٌ.
○ Fat cows: -> بَقَرَاتٌ سِمَانٌ (سِمَانٌ is a broken plural adjective meaning 'fat').
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The Rule for a Non-Rational Plural Noun Described
Grammatical Rules of the Adjectival Phrase
● In an adjectival phrase, when the noun described is a non-rational plural, its adjective is generally feminine singular.
● Arabic grammar also permits a feminine plural or broken plural adjective with a non-rational plural. For example:
○ Open doors: -> أَبْوَابٌ مَفْتُوحَةٌ (مَفْتُوحَةٌ is a feminine singular adjective).
○ Purified pages/scriptures: -> صُحُفٌ مُطَهَّرَةٌ.
○ A limited number of days: -> أَيَّامٌ مَعْدُودَةٌ or أَيَّامٌ مَعْدُودَاتٌ (a feminine plural adjective).
○ Known months: -> أَشْهُرٌ مَعْلُومَاتٌ.
○ Fat cows: -> بَقَرَاتٌ سِمَانٌ (سِمَانٌ is a broken plural adjective meaning 'fat').