What is the difference between dual and plural in Arabic?
Arabic nouns are marked not for two but for three different numbers: singular, dual, and plural.
The singular is considered the base form of the noun, the dual refers to two of something, and the plural refers to three or more.
What is the dual in Arabic?
Instead of using the number two plus the plural form of the noun (as in English), Arabic has a separate number category called the dual.
The dual is formed by adding a suffix:
ـانِ (-ani) for the nominative case
ـيْنِ (-ayni) for the accusative and genitive cases
If the word ends with ة (ta marbuTa), the ة changes to a regular ت before adding the dual suffix.
Here are some examples:
Remember the agreement we discussed earlier?
If a noun in the dual form is modified by an adjective, referred to by a pronoun, or used as the subject of a following verb, then all of these elements must also take the dual inflection.
Arabic plural
The Arabic plural is divided into two main categories:
External plural – formed by adding suffixes to the singular.
Internal plural (broken plural) – formed by changing the arrangement of vowels and sometimes adding extra consonants.
We’ll now go over the external plural, which is divided into the sound feminine plural and the sound masculine plural.
The sound feminine plural
The suffix for the sound feminine plural is ات (-aat).
If the singular noun ends in ة (ta marbuTa), the plural suffix ات replaces it.
The words سنة (sana – year) and أخت (’ukht – sister) insert و before ات.
Nouns ending in ا followed by ة add و before ات.
Nouns ending in ى add ي before ات.
Nouns ending in ء drop the ء and then add ات.
The word أمّ (umm – mother) adds ه before ات. The same applies to borrowed words ending in a long vowel, such as radio → راديوهات (raadyoohaat).
Here are some examples:
The sound masculine plural
This form is used only for nouns and adjectives referring to male human beings or mixed groups of males and females.
Notice the human beings aspect. As we mentioned earlier when discussing humanness, the sound feminine plural is often used for nonhuman things such as companies, stations, hospitals, etc.
The endings for the sound masculine plural are:
ـونَ (-una) for the nominative case
ـينَ (-ina) for the accusative and genitive cases
Broken plural in Arabic
This is a distinctive feature of Arabic. It involves shifting the vowel patterns within a word — similar to English examples like man → men, mouse → mice, or foot → feet. In some cases, additional consonants are also added.
For non-native learners, figuring out which plural form a noun takes can be frustrating and time-consuming. The best approach is to learn the singular and plural together, since there are multiple patterns (some of which are shown below).
Here are some of the most common words in singular and plural:
