Arabic Broken Plurals: Patterns, Rules, and Examples (جمع التكسير)
In English, you usually add an “s” to make a plural. In Arabic, many nouns change their shape from the inside instead. These are called Arabic broken plurals (جمع التكسير, jam‘ at-taksir), and they are among the most common and most puzzling parts of the language. This guide explains what they are, shows the main patterns, and gives you simple rules for using them correctly.
What Is a Broken Plural?
Arabic has three ways of forming plurals:
Type | Arabic name | How it is formed | Example |
|---|---|---|---|
Sound masculine | جمع المذكر السالم | add ـون / ـين | مدرّس → مدرّسون |
Sound feminine | جمع المؤنث السالم | add ـات | مدرّسة → مدرّسات |
Broken | جمع التكسير | change the internal shape | كتاب → كتب |
The word “broken” comes from the fact that the singular form is broken apart and rebuilt into a new shape. The root letters stay the same, but the vowels and extra letters change. For example, كتاب (book) becomes كتب (books), and both come from the root ك ت ب.
The Most Common Broken Plural Patterns
There are dozens of patterns, but a handful cover most everyday words. Here are the ones to learn first.
Pattern | Singular | Plural | Meaning |
|---|---|---|---|
أَفْعال | قلم | أقلام | pen(s) |
فُعول | بيت | بيوت | house(s) |
فِعال | رجل | رجال | man / men |
فُعُل | كتاب | كتب | book(s) |
مَفاعِل | مدرسة | مدارس | school(s) |
فَعائِل | رسالة | رسائل | letter(s) |
فُعَلاء | وزير | وزراء | minister(s) |
The model root ف ع ل is used to name each pattern, the same way it is used for singular patterns. Slot the root letters into the pattern and you get the plural.
Quick Ways to Recognize Patterns
- Words ending in ـة that name places often take مَفاعِل: مدرسة → مدارس, مكتبة → مكاتب, مطعم → مطاعم, مسجد → مساجد.
- Words for jobs or people with ـير often take فُعَلاء: وزير → وزراء, فقير → فقراء, سفير → سفراء.
- Short three-letter nouns often take أفعال, فُعول or فِعال: يوم → أيام, درس → دروس, جبل → جبال.
- Feminine nouns ending in ـة with a long vowel before the end often take فَعائل: رسالة → رسائل, جريدة → جرائد.
These are tendencies rather than strict rules, so always check a dictionary when you are unsure.
Agreement Rules You Need to Know
Broken plurals follow some special grammar rules:
- Non-human plurals are treated as feminine singular. Arabic says الكتب جديدة (the books are new), using the feminine singular جديدة, not a plural adjective.
- Human plurals usually take plural agreement. For example, الطلاب الجدد وصلوا (the new students arrived).
- Numbers 3 to 10 take a plural noun. Say ثلاثة كتب (three books) and خمسة أقلام (five pens).
- Arabic uses the dual for two. Broken plurals are for three or more, so two books is كتابان, not كتب.
Words with More Than One Plural
Some nouns have two broken plurals, sometimes with slightly different meanings or levels of formality. For example, شهر (month) can become شهور or أشهر. When you learn a new noun, it helps to learn its plural at the same time, just as you would learn its gender.
Tips for Learning Broken Plurals
- Learn the singular and plural together. Treat the pair as one vocabulary item.
- Spot the root. The root letters usually survive, so you can often recognize the plural by its three letters.
- Group words by pattern. Learning all the مَفاعِل words together is easier than memorizing them one by one.
- Read and listen a lot. Repeated exposure is the best way to get a feel for which pattern a word prefers.
Quick Practice
Give the broken plural of each word:
- قلم
- باب
- مسجد
- رسالة
Then choose the correct word: الكتب ___ (جديد / جديدة).
Answers: 1. أقلام. 2. أبواب. 3. مساجد. 4. رسائل. Last question: جديدة, because non-human plurals take feminine singular agreement.
The Bottom Line
Arabic broken plurals may look random at first, but they follow clear patterns that repeat across the language. Learn the common patterns, remember the agreement rules, and always pair each new noun with its plural. Soon you will recognize the shapes instantly and use them with confidence.