Sound Plurals in Arabic

In Brief

Arabic has two common “sound” plural patterns, so called because the singular stem stays mostly intact. The sound masculine plural usually adds ـون or ـين to words for male humans, while the sound feminine plural usually replaces final ـة with ـات: معلّم → معلّمون / معلّمين and معلّمة → معلّمات. These patterns are regular, but not every noun uses them.

Overview

A plural refers to more than two people or things. Arabic also has a separate dual form for exactly two, so the grammatical plural normally begins at three. A noun (a word for a person, place, thing, or idea) may form its plural by adding a regular ending or by changing its internal structure. The regular forms are called sound plurals because the main shape of the singular word remains “sound,” or unbroken.

There are two principal patterns. جمع المذكّر السالم (jamʿ al-mudhakkar as-sālim) is the sound masculine plural, most often used for male people and masculine words describing them. جمع المؤنّث السالم (jamʿ al-muʾannath as-sālim) is the sound feminine plural, widely used with feminine nouns and with many other words. You meet both at A1 in descriptions of people, jobs, nationalities, objects, and places.

English usually marks a regular plural with one ending, -s or -es, regardless of gender or a word’s role in the sentence. Arabic asks two extra questions: what kind of noun is this, and—especially in formal Modern Standard Arabic—what role does it have in the sentence? The beginner rule is straightforward, but it is important to learn each new noun together with its actual plural. Many very common Arabic nouns use a broken plural instead.

How It Works

The beginner rule

Singular type	Change	Typical plural	Meaning
Masculine word for a male person	Add ـون	معلّم → معلّمون	male teacher → male teachers
The same word after a preposition or as an object	Add ـين	معلّم → معلّمين	male teachers
Feminine noun ending in ـة	Remove ـة and add ـات	معلّمة → معلّمات	female teacher → female teachers
Many other nouns that follow the feminine sound pattern	Add ـات, sometimes with a spelling adjustment	جامعة → جامعات	university → universities

At first, remember the useful contrast ـون / ـين for the masculine pattern and ـات for the feminine pattern. The choice between ـون and ـين is not a difference in number: both mean “plural.” It reflects case, meaning the noun’s job in a formal sentence.

Sound masculine plural: ـون and ـين

The sound masculine plural is used mainly with nouns and adjectives for male humans. Job titles and participles—words that describe someone as doing or being something—often follow it:

Singular	Nominative plural	Accusative/genitive plural	Meaning
معلّم	معلّمون	معلّمين	teacher(s)
مهندس	مهندسون	مهندسين	engineer(s)
موظّف	موظّفون	موظّفين	employee(s)
مجتهد	مجتهدون	مجتهدين	hardworking
مصريّ	مصريّون	مصريّين	Egyptian

The nominative is normally used for the subject (the person or thing doing the action) and for a noun or adjective after “to be” in a present-time sentence. It takes ـونَ (-ūna) in fully pronounced formal Arabic:

• وصل المهندسون. — The engineers arrived.
• هم موظّفون جدد. — They are new employees.

The accusative is commonly used for the direct object (the person or thing directly affected by the action). The genitive is used after a preposition and in certain possessive structures. Both take ـينَ (-īna):

• قابلت المهندسين. — I met the engineers. (direct object)
• تحدّثت مع المهندسين. — I spoke with the engineers. (after مع, “with”)

Unlike short case vowels, which are usually omitted in everyday Arabic writing, the و of ـون and the ي of ـين are written. This makes the case contrast visible even in unvowelled text.

The pattern is productive, but it is not a universal label for all male beings. It is strongest with rational male humans and words that describe them. Many male-human nouns have broken plurals instead: رجل → رجال (man → men), طفل → أطفال (child → children), and طبيب → أطبّاء (doctor → doctors). Learn the plural with the noun rather than inventing ـون automatically.

Sound feminine plural: ـات

For a noun ending in ة (tāʾ marbūṭa, the round letter that often marks a feminine singular), remove that final letter and add ات:

Singular	Remove	Add	Plural	Meaning
معلّمة	ة	ات	معلّمات	female teachers
طالبة	ة	ات	طالبات	female students
سيارة	ة	ات	سيارات	cars
جامعة	ة	ات	جامعات	universities
كلمة	ة	ات	كلمات	words

This pattern is called “feminine,” but its use is not limited to female people. It occurs with objects such as سيارات, places such as جامعات, abstract nouns such as معلومات (“information/items of information”), and many borrowed or newly coined terms.

Conversely, a feminine singular does not have to take ـات. Common nouns such as مدينة → مدن (city → cities), شجرة → أشجار (tree → trees), and امرأة → نساء (woman → women) use broken plurals. The final ة is therefore a helpful clue, not a guarantee.

A few plurals in ـات involve more than simply replacing ة. For example, بنت → بنات (girl → girls) and أخت → أخوات (sister → sisters) have a stem adjustment. They are frequent enough to learn as complete vocabulary pairs.

Case with the feminine sound plural

The written ending ـات remains in all three cases, but its final short vowel changes in fully vowelled Modern Standard Arabic:

Role	Indefinite	Definite	Example meaning
Nominative	معلّماتٌ	المعلّماتُ	(the) female teachers, as subject
Accusative	معلّماتٍ	المعلّماتِ	(the) female teachers, as object
Genitive	معلّماتٍ	المعلّماتِ	(the) female teachers, after a preposition

The notable point is that the sound feminine plural takes kasra (the i vowel) in both the accusative and genitive. In normal unvowelled writing, all these forms appear simply as معلّمات or المعلّمات, so beginners can usually focus first on forming ـات correctly.

Gender and agreement

With human plurals, adjectives normally match the plural’s gender and number:

• معلّمون مجتهدون — hardworking male teachers
• معلّمات مجتهدات — hardworking female teachers

Non-human plurals behave differently. In standard Arabic, whether their noun has a sound or broken plural, they usually take feminine singular agreement:

• سيارات جديدة — new cars, literally with “new” in the feminine singular
• جامعات كبيرة — large universities
• معلومات مهمّة — important information

This differs sharply from English, where adjectives never change for plural agreement. Do not copy the noun’s ـات onto an adjective describing non-human things: سيارات جديدات is not the normal standard-Arabic agreement.

Examples in Context

Arabic	English	Note
المعلّمون في الصفّ.	The male teachers are in the classroom.	ـون marks a nominative human plural.
يعمل المهندسون في هذه الشركة.	The engineers work at this company.	Male-human subject with ـون.
قابلت الموظّفين الجدد.	I met the new male employees.	Direct object; both noun and adjective use ـين.
تحدّثنا مع المعلّمين.	We spoke with the male teachers.	ـين follows the preposition مع.
المعلّمات يشرحن الدرس.	The female teachers explain the lesson.	Human feminine plural in ـات.
وصلت الطالبات مبكّرًا.	The female students arrived early.	Feminine human subject.
هذه السيارات جديدة.	These cars are new.	Non-human plural takes feminine singular جديدة.
الجامعات كبيرة في هذه المدينة.	The universities are large in this city.	جامعات is sound feminine; adjective is feminine singular.
اشتريت ثلاث سيّارات.	I bought three cars.	A common feminine sound plural after a number.
نحتاج إلى معلومات دقيقة.	We need accurate information.	معلومات is followed by feminine singular دقيقة.
هم مصريّون، لكنّهم يعيشون في لندن.	They are Egyptian, but they live in London.	A masculine nationality adjective used as a noun.
رأيت السائحين أمام المتحف.	I saw the male tourists in front of the museum.	Direct object with ـين.
البنات يلعبن في الحديقة.	The girls are playing in the garden.	بنات has a small stem change from بنت.
هذه الكلمات سهلة.	These words are easy.	Non-human كلمات takes feminine singular agreement.

Common Mistakes

Adding ـون to every masculine noun

• Wrong: رجلون
• Right: رجال — men
• Why: Many male-human nouns have broken plurals. ـون is common with professions, nationalities, participles, and adjectives, but you must still learn each noun’s plural.

Keeping ة before ـات

• Wrong: معلّمةات
• Right: معلّمات
• Why: Final ة is removed before ات is added. Think of this as replacing the ending, not attaching one whole word to another.

Using ـون after a preposition

• Wrong: مع المعلّمون
• Right: مع المعلّمين — with the teachers
• Why: A preposition requires the genitive case, and the sound masculine plural uses ـين in the genitive.

Using ـين for a subject in careful formal Arabic

• Wrong: وصل المهندسين
• Right: وصل المهندسون — The engineers arrived.
• Why: The subject is nominative, so formal Modern Standard Arabic requires ـون. Some spoken varieties use an -īn form more broadly, but that does not change the formal rule.

Making a non-human adjective plural

• Wrong: سيارات جديدات
• Right: سيارات جديدة — new cars
• Why: A non-human plural normally takes feminine singular agreement in standard Arabic, even when the noun ends in ـات.

Assuming every word ending in ة uses ـات

• Wrong: مدينات as the ordinary plural of مدينة
• Right: مدن — cities
• Why: Final ة makes ـات plausible, not automatic. Dictionaries and good vocabulary notes give the established plural.

Usage Notes

These rules describe Modern Standard Arabic, the variety used in formal writing, news, education, and prepared speech. In unvowelled text, the masculine contrast remains visible as ـون versus ـين, while feminine case differences are hidden because the short final vowel is not written.

Spoken Arabic varieties do not maintain the full three-case system in ordinary conversation. Many dialects generalize an -īn-type sound masculine ending, while -āt remains highly productive for feminine and borrowed nouns. Exact pronunciation and vocabulary vary by region. If your current goal is standard Arabic, learn ـون for nominative and ـين for accusative/genitive; later, notice how speakers adapt those forms in the dialect you study.

Some nouns allow more than one plural, sometimes with a difference in meaning or usage. A sound plural may refer especially to people in a profession, while another form may be lexicalized or preferred in a particular context. Treat dictionary alternatives as vocabulary choices, not as permission to attach any ending freely.

Beyond the Basics / Advanced Use

You do not need to master the details in this section at A1, but they explain forms you will meet in formal texts.

Dropping the final ن in a possessive construction

An iḍāfa is a two-part possessive expression, similar to “the teachers of the school” or “the school’s teachers.” When a sound masculine plural is the first word of an iḍāfa, its final ن is removed:

Independent form	In an iḍāfa	Meaning
معلّمون	معلّمو المدرسة	the school’s teachers (nominative)
معلّمين	معلّمي المدرسة	the school’s teachers (accusative/genitive)

Compare حضر المعلّمون (“the teachers attended”) with حضر معلّمو المدرسة (“the school’s teachers attended”). The و or ي still marks case; only ن disappears. A possessive suffix causes the same general loss of ن.

Verb agreement depends on word order

With human plural subjects, a verb after the subject normally shows plural agreement: المعلّمون حضروا (“the teachers attended”). When the verb comes before an explicit plural subject, formal Arabic usually puts the verb in the singular while retaining gender: حضر المعلّمون and حضرت المعلّمات. This is a sentence-agreement rule, not a change to the plural noun itself.

Spelling changes in some feminine plurals

Words ending in ـاء or ـى may change spelling before ـات. For example, صحراء → صحراوات (desert → deserts) and مستشفى → مستشفيات (hospital → hospitals). These patterns depend on the word’s underlying stem, so they are best learned after the basic ة → ات rule is secure.

Finally, do not confuse masculine plural ـين with the dual ـين. Context and the singular stem help distinguish them: معلّمين can mean “teachers” in an accusative/genitive role, while معلّمَين means “two teachers.” In fully vowelled Arabic their internal vowels differ, but ordinary writing often leaves the distinction to context.

Practice Tips

1. Learn vocabulary in pairs. Write معلّم / معلّمون, معلّمة / معلّمات, but also مدينة / مدن. This prevents the regular rules from turning into false guesses.
2. Build three short sentences for each masculine plural. Use it once as a subject (وصل المهندسون), once as an object (رأيت المهندسين), and once after a preposition (مع المهندسين). This makes ـون / ـين meaningful rather than a list to memorize.
3. Mark human versus non-human. Sort plural nouns into two columns, then add an adjective. Say طالبات مجتهدات but جامعات كبيرة. This trains the agreement contrast at the same time as the plural ending.

Related Concepts

• Prerequisite: Noun Gender — explains masculine and feminine nouns and the common role of ة.
• Next step: Broken Plurals — covers plurals formed by changing the inside of the word rather than adding a regular ending.
• Next step: Dual Number — introduces Arabic forms for exactly two and contrasts them with sound plurals.