Arabic Adjectives: As-Sifah (الصِّنَة)
The Art of Description and Grammatical Agreement in Arabic Grammar
1. What is As-Sifah and Al-Mawsūf?
In Modern Standard Arabic (MSA), describing objects, people, or places relies on a precise grammatical structure known as the descriptive phrase or Na't wa Man'ūt (نَعْت وَمَنْعُوت), often referred to as As-Sifah (الصِّفَة - The Adjective) and Al-Mawsūf (الْمَوْصُوف - The Noun Described).
Unlike English, where adjectives strictly precede the noun (e.g., "a big house"), Arabic word order dictates that the noun comes first, immediately followed by its describing adjective. Conceptually, an adjective in Arabic functions like a grammatical shadow: it mirrors the noun in every single grammatical attribute, adapting its form to match the noun's gender, definiteness, number, and case.
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2. The 4 Golden Pillars of Agreement
For a phrase to form a valid noun-adjective combination, the Sifah must agree with the Mawsūf in four distinct grammatical traits:
- Gender (الْجِنْس): If the noun is masculine, the adjective remains in its base masculine form. If the noun is feminine (usually indicated by a Tā' Marbūṭah - ة), the adjective must take a feminine ending as well (e.g., كَبِير becomes كَبِيرَة).
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Definiteness (التَّعْرِيف وَالتَّنْكِير): This is the single most critical rule for beginners. If the noun is indefinite (has tanwīn, no Al-), the adjective must also be indefinite. If the noun is made definite with the prefix Al- (اَلْـ), the adjective must also take Al-.
Crucial Distinction: If you write اَلْبَيْتُ كَبِيرٌ (Definite noun + Indefinite adjective), it is no longer a phrase ("the big house")! It turns into a complete nominal sentence: "The house is big." - Number (الْعَدَد): The adjective matches whether the noun is singular (Mufrad), dual (Muthannā), or plural (Jam').
- Grammatical Case (الإِعْرَاب): The short vowel on the final letter (Dammah for nominative, Fathah for accusative, Kasrah for genitive) must be identical on both the noun and the adjective.
3. Common Descriptive Phrases in Action
Notice how adding or removing the definite article Al- or shifting genders alters the entire phrase structure while keeping the agreement intact:
| English Phrase | Arabic Script | Transliteration | Grammatical Type |
|---|---|---|---|
| A big house | بَيْتٌ كَبِيرٌ | Baytun kabīrun | Masc. Indefinite Phrase |
| The big house | اَلْبَيْتُ الْكَبِيرُ | Al-baytu al-kabīru | Masc. Definite Phrase |
| A new car | سَيَّارَةٌ جَدِيدَةٌ | Sayyāratun jadīdatun | Fem. Indefinite Phrase |
| The new car | اَلسَّيَّارَةُ الْجَدِيدَةُ | As-sayyāratu al-jadīdatu | Fem. Definite Phrase |
4. The Non-Human Plural Exception (Jam' Ghayr 'Āqil)
There is one fundamental rule exception in Arabic grammar that every learner must memorize regarding number agreement:
"All non-human plural nouns in Arabic are grammatically treated as singular feminine nouns."
Whether you are talking about books, houses, cars, or cities, once the noun becomes a non-human plural, its adjective must be feminine singular—not plural!
- Singular: A new book → كِتَابٌ جَدِيدٌ (Kitābun jadīdun - Masc. Singular)
- Plural: New books → كُتُبٌ جَدِيدَةٌ (Kutubun jadīdatun — Plural noun + Fem. Singular Adjective)
- Definite Plural: The new books → اَلْكُتُبُ الْجَدِيدَةُ (Al-kutubu al-jadīdatu)
5. Essential Beginner Vocabulary Checklist
Here are ten foundational descriptive adjectives in their base masculine forms. To convert any of these to feminine, simply append a Tā' Marbūṭah (ة / ـة) to the end:
📏 Large / Big: كَبِير (Kabīr)
🔍 Small: صَغِير (Ṣaghīr)
✨ New: جَدِيد (Jadīd)
📜 Old: قَدِيم (Qadīm)
🛠️ Broken: مَكْسُور (Maksūr)
🌟 Beautiful: جَمِيل (Jamīl)
🏃 Fast: سَرِيع (Sarī‘)
🐢 Slow: بَطِيء (Baṭī’)
📖 Intelligent / Diligent: مُجْتَهِد (Mujtahid)
💡 Near / Close: قَرِيب (Qarīb)
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