Arabic Number Gender Rules: When Numbers Change Form
Arabic number gender rules are famously tricky — numbers flip masculine and feminine forms in unexpected ways. This guide breaks it all down simply.
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Arabic Number Gender Rules: When Numbers Change Form
If you've spent any time studying Arabic numbers, you've probably hit a wall that stops nearly every learner in their tracks: Arabic numbers change their form depending on the gender of the noun they're counting. And to make it even more surprising, they often do the opposite of what you'd expect.
This phenomenon — known as Arabic number gender agreement — is one of the most discussed quirks of Arabic grammar. Even native speakers sometimes pause to double-check their usage. But once you understand the underlying logic, it becomes far more manageable.
In this guide, we'll break down the rules step by step, show you real examples with Arabic text, and help you develop an intuition for getting numbers right every time.
Why Arabic Numbers Have Gender
Arabic is a grammatically gendered language. Every noun — whether it refers to a person, object, or concept — is either masculine (مُذَكَّر, mudhakkar) or feminine (مُؤَنَّث, mu'annath). If you're new to this concept, it helps to first get comfortable with Arabic grammar basics before diving into number agreement.
In most gendered languages (like French or Spanish), adjectives and numbers simply match the gender of the noun. If the noun is feminine, the number is feminine. Simple.
Arabic, however, does something linguistically fascinating: for numbers 3 through 10, the number takes the opposite gender of the noun being counted. This is called gender polarity (المخالفة, al-mukhalafa), and it is one of the most distinctive features of Classical and Modern Standard Arabic.
This rule applies specifically in formal and written Arabic (Modern Standard Arabic / Fusha). Many spoken dialects simplify or drop this rule entirely, but for reading the Quran, formal writing, or news media, it's essential.
The Two Genders of Arabic Nouns: A Quick Refresher
Before diving into number rules, let's quickly review how to identify noun gender in Arabic:
- Masculine nouns have no special ending. Examples: كِتَاب (kitab, book), وَلَد (walad, boy), قَلَم (qalam, pen).
- Feminine nouns typically end in ة (taa marbuta). Examples: مَدْرَسَة (madrasa, school), بِنْت (bint, girl — irregular), شَمْس (shams, sun — irregular feminine).
Some nouns are feminine by convention even without a taa marbuta ending, such as names of cities, countries, body parts that come in pairs, and words like أرض (ard, earth) and نار (nar, fire).
Keep this in mind as we explore how numbers interact with these genders.
💡 Explore the full list of Arabic vocabulary organized by category on our Arabic words page to practice identifying noun genders.
Numbers 1 and 2: They Match the Noun
Let's start with the easy ones. Numbers 1 and 2 behave like regular adjectives — they agree with the gender of the noun.
Number 1 (وَاحِد / وَاحِدَة)
| Gender | Arabic | Transliteration | Example |
|---|---|---|---|
| Masculine | وَاحِد | wahid | كِتَابٌ وَاحِد (kitabun wahid — one book) |
| Feminine | وَاحِدَة | wahida | مَدْرَسَةٌ وَاحِدَة (madrasatun wahida — one school) |
Note that واحد (one) is used as an adjective and comes after the noun in Arabic.
Number 2 (اثْنَان / اثْنَتَان)
| Gender | Arabic | Transliteration | Example |
|---|---|---|---|
| Masculine | اثْنَان | ithnan | وَلَدَانِ اثْنَان (waladani ithnan — two boys) |
| Feminine | اثْنَتَان | ithnataan | بِنْتَانِ اثْنَتَان (bintani ithnataan — two girls) |
For the number 2, Arabic typically just uses the dual form of the noun itself (adding ـان to the end), making the number word less commonly used.
Numbers 3–10: The Famous Gender Polarity Rule
Here is where Arabic number grammar gets interesting — and where most learners stumble.
For numbers 3 through 10, the number takes the OPPOSITE gender of the noun it counts.
- Counting masculine nouns → use the feminine form of the number
- Counting feminine nouns → use the masculine form of the number
This rule sounds backwards, but it's consistent and ancient — linguists believe it may reflect a historical process where the feminine marker was used to indicate an intensified or collective form.
Numbers 3–10 in Both Forms
| Number | Masculine Form (used with feminine nouns) | Feminine Form (used with masculine nouns) |
|---|---|---|
| 3 | ثَلَاثَة (thalatha) | ثَلَاث (thalath) |
| 4 | أَرْبَعَة (arba'a) | أَرْبَع (arba') |
| 5 | خَمْسَة (khamsa) | خَمْس (khams) |
| 6 | سِتَّة (sitta) | سِتّ (sitt) |
| 7 | سَبْعَة (sab'a) | سَبْع (sab') |
| 8 | ثَمَانِيَة (thamaniya) | ثَمَانٍ (thamani) |
| 9 | تِسْعَة (tis'a) | تِسْع (tis') |
| 10 | عَشَرَة (ashara) | عَشْر (ashr) |
The forms with ة (taa marbuta) are the feminine forms of the number. The ones without are the masculine forms.
Real Examples in Action
Counting masculine nouns (use feminine number form — with ة):
- ثَلَاثَةُ كُتُبٍ — thalathu kutubin — three books (كتاب is masculine)
- خَمْسَةُ طُلَّابٍ — khamsatu tullabin — five students (طالب is masculine)
- سَبْعَةُ أَيَّامٍ — sab'atu ayyamin — seven days (يوم is masculine)
Counting feminine nouns (use masculine number form — without ة):
- ثَلَاثُ مَدَارِسَ — thalatu madaarisa — three schools (مدرسة is feminine)
- خَمْسُ سَيَّارَاتٍ — khamsu sayyaratin — five cars (سيارة is feminine)
- عَشْرُ دَقَائِقَ — ashru daqaa'iqa — ten minutes (دقيقة is feminine)
💡 Memory tip: Think of numbers 3–10 as "contrarian" — they always pick the opposite team!
Also note that the noun after numbers 3–10 is always in the plural form and in the genitive case (مجرور).
Numbers 11–12: Double Agreement
Numbers 11 and 12 follow yet another pattern — both parts of the number agree with the noun (no polarity here).
Number 11 (أَحَدَ عَشَرَ / إِحْدَى عَشْرَةَ)
| Gender | Arabic | Example |
|---|---|---|
| Masculine | أَحَدَ عَشَرَ | أَحَدَ عَشَرَ طَالِبًا (eleven male students) |
| Feminine | إِحْدَى عَشْرَةَ | إِحْدَى عَشْرَةَ طَالِبَةً (eleven female students) |
Number 12 (اثْنَا عَشَرَ / اثْنَتَا عَشْرَةَ)
| Gender | Arabic | Example |
|---|---|---|
| Masculine | اثْنَا عَشَرَ | اثْنَا عَشَرَ شَهْرًا (twelve months) |
| Feminine | اثْنَتَا عَشْرَةَ | اثْنَتَا عَشْرَةَ دَقِيقَةً (twelve minutes) |
For 11 and 12, the noun that follows is singular and in the accusative case (منصوب).
Numbers 13–19: Mixed Polarity
Here the rules get layered. Numbers 13–19 are compound numbers (like "thirteen" = three + ten). Each part follows its own rule:
- The first part (units digit) follows gender polarity (opposite of the noun)
- The second part (عَشَرَ / عَشْرَةَ, meaning "ten") agrees with the noun
Examples:
Thirteen books (كتاب = masculine):
- ثَلَاثَةَ عَشَرَ كِتَابًا
- thalathat 'ashar kitaban
- Units (ثَلَاثَةَ) = feminine form because noun is masculine ✓
- Tens (عَشَرَ) = masculine form because noun is masculine ✓
Thirteen schools (مدرسة = feminine):
- ثَلَاثَ عَشْرَةَ مَدْرَسَةً
- thalatha 'ashrata madrasatan
- Units (ثَلَاثَ) = masculine form because noun is feminine ✓
- Tens (عَشْرَةَ) = feminine form because noun is feminine ✓
For numbers 13–19, the noun is singular and accusative.
Numbers 20–99: No Gender Change
Good news: numbers from 20 onward do not change for gender. The forms are fixed:
- عِشْرُونَ ('ishrun) — twenty
- ثَلَاثُونَ (thalathun) — thirty
- أَرْبَعُونَ (arba'un) — forty
- ... and so on
For compound numbers like 21, 22, etc., only the units digit (1–9) follows gender polarity if it falls in the 3–10 range:
- وَاحِدٌ وَعِشْرُونَ رَجُلًا — wahidun wa-'ishruna rajulan — twenty-one men
- خَمْسَةٌ وَعِشْرُونَ طَالِبًا — khamsatun wa-'ishruna taliban — twenty-five students (masculine noun → feminine number form)
- خَمْسٌ وَعِشْرُونَ سَيَّارَةً — khamsun wa-'ishruna sayyaratan — twenty-five cars (feminine noun → masculine number form)
For numbers 20–99, the noun is singular and accusative.
For a complete reference of all Arabic numbers with pronunciation, visit our detailed guide on Arabic Numbers 1-100, or browse the full Arabic numbers listing.
Numbers 100, 1000, and Beyond
Large round numbers are blessedly simple:
- مِئَة (mi'a, one hundred) — no gender distinction
- أَلْف (alf, one thousand) — no gender distinction
- مِلْيُون (milyun, one million) — no gender distinction
These numbers are invariable for gender. The noun after them is singular genitive:
- مِئَةُ طَالِبٍ — mi'atu talibin — one hundred students
- أَلْفُ كِتَابٍ — alfu kitabin — one thousand books
Quick Reference: Arabic Number Gender at a Glance
| Number Range | Gender Rule | Noun Form After Number |
|---|---|---|
| 1 | Agrees with noun | Singular |
| 2 | Agrees with noun (dual) | Dual |
| 3–10 | Opposite gender (polarity) | Plural genitive |
| 11–12 | Agrees with noun | Singular accusative |
| 13–19 | Units = opposite; tens = same | Singular accusative |
| 20–99 | No gender change | Singular accusative |
| 100+ | No gender change | Singular genitive |
Common Mistakes to Avoid
Even advanced learners make these errors. Watch out for:
1. Using the wrong polarity for 3–10 The most common mistake is using the feminine number form with feminine nouns (matching instead of flipping). Remember: always flip for 3–10.
❌ ثَلَاثَةُ سَيَّارَاتٍ (three feminine cars — wrong form) ✅ ثَلَاثُ سَيَّارَاتٍ (correct — masculine number form with feminine noun)
2. Using a plural noun after numbers 11 and above After 11 and higher, the noun should be singular, not plural.
❌ خَمْسَةَ عَشَرَ كُتُبٌ (plural — wrong) ✅ خَمْسَةَ عَشَرَ كِتَابًا (singular — correct)
3. Confusing dialect rules with MSA rules In Egyptian Arabic and many other dialects, number gender polarity is often dropped or simplified. If you're learning for Quranic study or formal writing, always use the MSA rules described here. Learn more about how dialects differ in our guide to Arabic dialects explained.
4. Forgetting irregular feminine nouns Nouns like شَمْس (sun), أَرْض (earth), and نَار (fire) are feminine despite lacking a taa marbuta. Always check a noun's gender if you're unsure.
Practice Exercises
Try forming these phrases using the correct number form. Answers follow:
- Five books (كِتَاب = masculine)
- Eight cars (سَيَّارَة = feminine)
- Fourteen days (يَوْم = masculine)
- Twenty-three girls (بِنْت = feminine)
Answers:
- خَمْسَةُ كُتُبٍ (khamsatu kutubin) — feminine number + plural masculine noun
- ثَمَانِي سَيَّارَاتٍ (thamani sayyaratin) — masculine number + plural feminine noun
- أَرْبَعَةَ عَشَرَ يَوْمًا (arba'ata 'ashara yawman) — units feminine + tens masculine + singular accusative
- ثَلَاثٌ وَعِشْرُونَ بِنْتًا (thalatun wa-'ishruna bintan) — masculine units + no change for 20 + singular accusative
Tips for Mastering Arabic Number Gender
Here are practical strategies to make these rules feel natural:
1. Learn nouns with their genders from day one. Whenever you learn a new Arabic word, note its gender immediately. This habit pays dividends across all areas of Arabic grammar, not just numbers. Our 100 most common Arabic words guide is a great place to build this habit.
2. Practice the 3–10 range first. This is where the polarity rule lives and where you'll get the most bang for your study time. Drill numbers 3–10 with both masculine and feminine nouns until the flipping feels automatic.
3. Read Arabic news and Quran with attention to numbers. Whenever you encounter a number in authentic text, pause and analyze it. Which form is used? What's the gender of the noun? This active reading builds intuition fast.
4. Use number-noun flashcard pairs. Instead of memorizing isolated numbers, create flashcards with complete phrases: "ثَلَاثَةُ طُلَّابٍ" on one side, "three students" on the other.
5. Don't be discouraged by complexity. Arabic grammar has depth, but it also has beautiful consistency. Once you internalize gender polarity as a rule (not a random exception), numbers start to fall into place. For broader grammar support, check out our Arabic sentence structure guide.
Conclusion
Arabic number gender rules are undeniably one of the more challenging aspects of Arabic grammar — but they are logical, consistent, and learnable. The key insights to carry away are:
- Numbers 1–2: match the noun's gender
- Numbers 3–10: flip to the opposite gender (gender polarity)
- Numbers 11–12: match the noun's gender again
- Numbers 13–19: units flip, tens match
- Numbers 20+: no gender variation
With patient practice and real-world exposure, these patterns become second nature. Arabic's complexity is part of what makes it one of the world's richest languages — and mastering details like gender agreement brings you closer to reading, writing, and speaking it with genuine fluency.
Ready to continue building your Arabic number skills? Explore our complete Arabic numbers reference and sharpen your overall grammar foundation with our Arabic grammar basics guide.