Welcome to the LAO series of tutorials on Arabic Morphology (‘ilm us-Sarf).

Arabic Morphology

What is Arabic Morphology?

The Arabic language sub-science known as صرف – referring roughly to what we know as Morphology as well as Etymology – is a subject through which one learns the internal assembly of a word by way of patterns of vowelization and introduction of extra letters—or what we call a template.

Morphology differs from Lexicology in the sense that the latter gives the root meaning associated to a set of base letters, whereas the former gives all other meanings and connotations achieved by the template.

Arabic Morphology

[Image Source: Shariah Program]

How we Study Arabic Morphology

In order to study Arabic morphology both completely and effectively, we divide the science into the following set of topics.

1.       conjugation

a.       Arabic verb conjugation – the study of how verbs are derived from a set of base letters and how they conjugate in the different tenses to reflect gender, plurality, voice, and other aspects

b.      derived nouns – the study of nouns in the language that are also derived from a set of base letters and how they conjugate

2.       verb paradigms – taking the basic verbal form and all its conjugations and adding certain extra letters in order to enhance its meaning and add certain connotations

3.       verb irregularities – the study of how verbs (basic and enhanced) and derived nouns conjugate when they contain certain “weak” letters

a.       Hamza verbs – regulations associated to verbs with a Hamza in any one of the three radicals (root letters)

b.      assimilated verbs – regulations associated to verbs with a glide (واو or ياء) as the first radical

c.       hollow verbs – regulations associated to verbs with a glide as the second radical

d.      deficient verbs – regulations associated to verbs with a glide as the third radical

e.      highly deficient verbs – regulations associated to verbs with multiple irregularities

f.        duplicated verbs – regulations associated to verbs in which the final two radicals have geminated

4.       paradigm connotations – the study of the specific connotations and enhanced meanings achieved by applying the paradigms studied in (2)

5.       more advanced topics such as advanced etymology and others

The rest of this tutorial goes into greater detail and gives introductory information about each of the above topics.

For true proficiency in the language, however – beyond theory and simply reading basic and advanced tutorials – one must learn Arabic through courses such as the Shariah Program. The esteemed teachers in such courses employ time-tested techniques to activate a student’s theory and provide vital feedback. Not only that, they understand students and introduce appropriate material at very calculated points in time so as to maximize the learning experience and not overwhelm the students.

These tutorials on Arabic morphology will provide basic and advanced theory, but practicing the conjugations of regular and irregular verbs is very essential. This practice and its feedback can only be achieved by learning Arabic through courses.

Overview of Arabic Words

We divide words in Arabic into three self-contained categories as follows.

·         اِسْم: (usually translated as “nouns”) includes nouns, pronouns, adjectives, adverbs, etc

·         فِعْل: verbs

·         حَرْف: particles, articles, and conjunctions

Particles are completely unpredictable; they don’t fall into the templatic system (i.e. they have no patterns) nor do they undergo any morphophonemic changes. They are what they are and must be memorized. The up side is that there are relatively few of them in the language – within one hundred.

Nouns and verbs do fall into the templatic system and have very systematic morphophonemic rules that govern them. This includes the study of how verbs are conjugated, how they move from pattern to pattern to enhance their meanings, how the participles and other nouns are derived, how nouns pluralize, etc.

Noun & Verb Overview

Each declinable noun and each verb is made up of a certain set of base letters, called its جذر. (Nouns that are always indeclinable (such as pronouns) usually don’t follow this system.)

Verbs can either have 3 base letters, or 4. Nouns can have 3, 4, or 5. Now these base letters can be augmented with extra letters, and they can be dropped or changed due to morphophonemic rules as well. Let’s look at some examples.

Added and Dropped/Changed Letters

Base Letters


ح، ي، ي


أ added

ل، ح، ق


و changed

ق، و، ل


ء and ي dropped, ه added

ر، ء، ي


ء and ن added

ط، م، ء، ن


Added and Dropped/Changed Letters

Base Letters


ه، م، س


أ and ا added, ي changed

ح، ي، ي


ا added, ي dropped

غ، ز، ي


ن added

غ، ض، ف، ر


Why are letters added? This is a result of taking a set of root letters and putting them into a patter in the templatic system. We do this to add more meaning, depth, and connotation to the basic meaning afforded by the root letters. This is one of the concepts covered by morphology. For example, the base letters given in the chart below afford the basic meaning of cutting. But ‘cutting’ is too abstract a meaning, so these letters are then inserted into templates, thus giving them tangible and even advanced meanings. (We use the base letters فعل to represent what a template looks like).














ق، ط، ع



they were boycotted, or interrupted


he cut

to cut

And why are letters dropped or changed? This is based on morphophonemic rules of the language which is the other major concept that morphology covers.

Introduction to the Templatic System

Each word in the language (noun or verb) is a combination of a set of base letters plus a given template. For example, the word إقْطاع is the base letters ق، ط، ع on the pattern إفْعال. The base letters give us a base meaning (cutting) and the pattern gives us a certain connotation (to do something to someone or something). Hence we get the meaning of ‘to cut something’. More specifically, the word means ‘fief’ which is a plot of land that has been cut or divided.

So we can think of each word in the language as an instantiation of a template using a set of base letters. But there are far too many templates in the language. So we have a layer of abstraction above templates which we call ‘template sets’.

For example, the words

مِلْعَقَة, مِفْتاح, عالَم

are instantiations of the patterns

مِفْعَلَة, مِفْعال, فاعَل

using the base letters

(ع، ل، ق), (ف، ت، ح), (ع، ل، م)

respectively. And all of the templates belong to a set called اسم الآلة (nouns of utilization).

Final Meaning

Template Set





spoon (that with which you lick)

اسم الآلة

noun of usage


to lick

ل، ع، ق


key (that with which you open)


to open

ف، ت، ح


world (that through which you learn (about God))


to know

ع، ل، م



·         the meanings cannot be directly inferred; but this templatic system is extraordinarily useful in a) guessing meanings to words, and b) providing a framework for creating new words

·         templates may be shared across several template sets

Introduction to the Morphophonemic Rules

There are a few letters in the language such that, if they are part of the base letters of a word, the word is considered weak. If a verbs is considered weak, a set of rules must be applied in order to change it so that it is no longer considered such. This discussion is mainly focused on three-lettered words, and we begin with verbs and then extend our knowledge to nouns later.

Below is a chart that gives these letters

Name of the Set of Rules Applied to this Type of Verb

Name Given to the Verb that has this

Week Letter (and where it Occurs in the Verb)


None of the below


الأفعال المهموزة

همزة anywhere in the base

تعليل or إعلال

الأفعال المعتلّة

أفعال المثال

واو or ياء in the first position

الأفعال الجوفاء

واو or ياء in the second position

الأفعال الناقصة

واو or ياء in the third position

أفعال اللفيف

واو or ياء in multiple positions


الأفعال المضاعفة

the second and third letters are the same

There are at least 50 rules that govern what will happen when these letters occur in a word, based on surrounding letters, vowels, etc. However, when we study basic morphology, we only discuss at most 10 of these as they account for the vast majority of these occurrences.

The classification of words based on weak letters is parallel to their classification based on templates. This means that a word will have both a template as well as a weak-letter classification. For example, the verb قال (he said) is on the pattern فَعَلَ and, in terms of its weakness, it is among the الأفعال الجوفاء.

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Arabic Morphology

A Cute Story

The templatic system covers the study of letters that are extra in a given word (i.e., part of the template and not the base letters). It is one of the most important skills for a student to be able to differentiate between base and extra letters. Without this skill, one will not even be able to look up words effectively in a dictionary.

Not every letter in the alphabet may act as extra. In fact, the letters that can are limited to the following 10:

ء، ا، ت، س، ل، م، ن، ه، و، ي

They can be memorized using the following phrases in which each of the above letters appears exactly once:

you asked me about it


today you forget it

أَلْيَوْمَ تَنْساهُ

So a student once asked his teacher about which letters are capable of being extra in a word. The teacher answered سألتمونيها (you’ve asked me already). The student denied previously asking, so the teacher responded by saying, أليوم تنساه (today you forget, eh?). When the student insisted, the instructor said, “I have answered you twice but you still don’t understand.”

Arabic Morphology FAQ

What is Arabic morphology?

Arabic Morphology

Arabic Morphology (sarf) is the sub-science of classical Arabic that deals with the meanings that come from patterns and extra letters within the template of a word. These meanings include tense, voice, and added connotations such as the notion of seeking in the attached example.

What are Arabic verb forms?

A basic verb form is the particular vowel configuration given to a set of 3 consonants in Arabic in order to turn those letters into an actual verb. Along with making the letters pronounceable, these vowels give us more meaning, namely the tense and voice. Verb forms can be simple and they can also be enhanced. Enhanced means the pattern involves the addition of one or two extra letters.

Are all Arabic verbs regular?

irregular verbs and weak letters in Sarf

No. There are a few letters in the language such that, if they are part of the base letters of a word, the word is considered weak. If a verb is considered weak, a set of rules must be applied in order to change it so that it is no longer considered such. 

How many root consonants do most Arabic verbs contain?

The vast majority of verbs in Arabic contain 3 root consonants.

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