In a nutshell: Shaddah (ّ) is a vital diacritical mark in Arabic that doubles a consonant, blending two identical sounds—one with a sukoon and the other with a vowel—for precise pronunciation and meaning. Found in words like عمَّ (amma), it enhances clarity, influences grammar, and even creates unique effects like nasalization in certain letters, making it a cornerstone of mastering the Arabic language.
Arabic is a rich language. One of the reasons for its richness is its diacritical marks and diacritical marks mean any mark or sign we add above letter. In Arabic, we have many diacritical marks such as Fattah(َ) Dammah(ُ), or Kasrah ِ)). One of the most important signs in the Arabic language is Shaddah. So, let’s have a look at this fascinating sign.
What is Shaddah in Arabic?
Shaddah in arabic شَدّة is one of diacritical marks that is used with the Arabic alphabet. The Shaddah refers to a geminated or doubled consonant. You can see the Shaddah sign as the following shape ( ّ, ) so it looks like a tiny س (seen) placed above the letter.
Shadda is shaped by bringing together two of the same letters: the first one is with Sukoon and the second one with a vowel. It is recited with emphasis.
A doubled consonant is called a “mushaddad” letter حرف مشدد. So, when you see a shadda above a letter, it means you pronounce that letter twice in one syllable.
For example, in the word عمْمَ , there are two م (meem) and they have come right next to each other. The first one comes with Sukoon, the second with a short vowel, so they are written as one Meem with a Shadda above عمَّ (amma) and recited with emphasis. Transliteration: the first one is ‘am-ma,’ and the second is ‘ammma’.
How to Read Shadda in Arabic?
To read the shadda in Arabic, look for the mark that looks like a small “w” above the letter. Here’s how you should approach it:
- Say the consonant with a short vowel sound.
- Hold the sound of the letter briefly.
- Say it again with the vowel following the Shadda.
Example:
- كَلَّمَ (kallama) – “he spoke to” (with Shadda on the “ل” making it doubled)
* Shaddah Lesson From Kalimah’s Iqraa book that is used in our online Arabic course.
Examples of Shadda in Arabic
Let’s look at some common words with Shadda. These Arabic shadda examples will help you understand how Shadda is formed.
| Word Before Shadda | Word After Shadda | Transliteration | Meaning in English |
| حَدْدَث | حَدَّثَ | ḥaddatha | he narrated |
| بَلْلَغ | بَلَّغَ | ballagha | he conveyed |
| مُحَمْمَد | مُحَمَّد | muḥammad | Muhammad (name) |
| عَدْدَدَ | عَدَّدَ | ʿaddada | he counted |
| سَكْكَتَ | سَكَّتَ | sakkata | he silenced |
| دَخْخَل | دَخَّلَ | Dakhala | he inserted |
| رتْتَب | رَتَّبَ | rattaba | He arranged |
| شَدْدَدَ | شَدَّدَ | shaddada | he strengthened |
| مَكْكَنَ | مَكَّنَ | makkan | he enabled |
| نَبْبَأَ | نَبَّأَ | nabbaʾa | he informed |
| كَذْذَبَ | كَذَّبَ | kadhdhaba | To call someone a liar |
| كَرَمَ | كَرَّمَ | karrama | he honored |
| ظَلْلَ | ظَلَّ | ẓalla | he remained |
| هَدْدَدَ | هَدَّدَ | haddada | he threatened |
| سَلْلَمَ | سَلَّمَ | sallama | he greeted |
| رَكْكَزَ | رَكَّزَ | rakkaza | he focused |
| قَرْرَرَ | قَرَّرَ | qarrara | he decided |
| نَظْظَمَ | نَظَّمَ | naẓẓama | he organized |
| بَصْصَرَ | بَصَّرَ | baṣṣara | he enlightened |
| غذْذَى | غَذَّى | ghadhdhaa | he nourished |
| جَسَدَ | جَسَّدَ | jassada | he embodied |
| نَزَلَ | نَزَّلَ | nazzala | he brought down |
| حَصَلَ | حَصَّلَ | ḥaṣṣala | he obtained |
| خَفْفَفَ | خَفَّفَ | khafafa | he lightened |
| رَبْبَى | رَبَّى | rabbaa | he raised |
| فَكْكَرَ | فَكَّرَ | fakkara | he thought |
| زَيْيَنَ | زَيَّنَ | zayyina | he adorned |
| أَصَرْرَ | أَصَرَّ | aṣarra | he insisted |

The Rules of Shadda
Understanding the rules of Shadda can help you read, write, and speak Arabic more fluently and with less confusion. Here, I will explain the main rules of Shadda in Arabic.
Rule 1: The First Consonant Must Have a Sukun
Before a shadda can make its appearance, the consonant it’s going to double must first be sakin ( ساكن ). This means it has no vowel sound of its own and relies on the vowel of the letter before it. It’s like the silent partner in a business, the one who works behind the scenes to make things happen.
Rule 2: The Second Consonant Must Have a Vowel
Now, for the shadda to do its job, the second consonant (the one that’s going to be doubled) must have a vowel. Any vowel will do, whether it’s a fatha, kasra, or damma.
There are three main harakat:
- Fatha (فَتْحَة) – a small line above the letter, creating the “a” sound.
Example: فَ (fa) with fatha = fa. - Kasra (كَسْرَة) – a small line below the letter, creating the “i” sound.
Example: فِ (fi) with kasra = fi. - Damma (ضَمَّة) – a small loop above the letter, creating the “u” sound.
Example: فُ (fu) with damma = fu.
* From Kalimah’s Iqraa book, the key resource we use in our online Arabic course.
When Shadda joined with Fattah and Dammah, we wrote them above the letter with Shadda. However, When Shadda joined with Kasrah, we write the Kasrah under the letter and Shadda above it.
For Example: the word سُكَّرْ (sokkr) which means (sugar) has Shadda with Fattah above the letter, and word يَدُقُّ (ydokko) which means (knock) has Shadda with Fattah above the letter. Unlike the word رَبِّ (rabbi) has the Kasrah under the letter.
Rule 3: No Shadda at the Start!
Here’s a crucial point: You’ll never find a shadda at the beginning of a word. It’s simply not allowed in Arabic grammar.
Think of it like this: the shadda needs a consonant to lean on, a sakin consonant to give it support. At the beginning of a word, there’s no such support.
Example: You cannot have a word like ” رّجل ” (this is incorrect). The correct form is ” رجل ” (rajul).
Rule 4: The Consonant With Shadda is Pronounced With Extra Emphasis
The shadda’s main function is to create what we call gemination. This means the consonant is pronounced with extra emphasis, almost like you’re holding onto it for a little longer. It’s like the difference between tapping something lightly and giving it a good, solid knock.
Example: Say the word ” حَسَن ” (hasan) out loud. Now say ” حَسَّن ” (hassan). Feel the difference? That stronger, more emphatic ‘s’ sound is the effect of the shadda.
Rule 5: Ghunna With Meem And Noon
When ن (Noon) and م (Meem) has a Shadda, they are given more of a Ghunna sound than other letters. Ghunna is a sound produced entirely from the nose (nasal passage). It is almost a sound like a hmm. The duration of this sound is 2 counts.
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When to Use Shaddah
Here are the main instances where shaddah is used:
1. Use Shaddah when two of the same consonant letters come together in a word
We use Shaddaa when two of the same consonant letters come together in a word. For example, in the word إنْ نَ , there are two ن (noon) and they have come right next to each other. The first one comes with Sukoon, the second with a short vowel, so they are written as one noon with a Shadda above إنّ and recited with emphasis. Transliteration: The first one is ‘in-na,’ the second is ‘innna’.
The main goal of Shadda is to indicate the double consonant sound in one word.
So, when we use Shadda that means that the consonant is doubled. For example, in the word جَهَنْنَمَ, there are two ن (noon) and they have come right next to each other. The first one comes with Sukoon, the second with a short vowel, so they are written as one Faa with a Shadda above جَهَنَّمَ (ghannem)and recited with emphasis.
The Shadda also doubles the consonant and retains its vowel or Tanween. For example, in the word سِرْرٌ, there are two ر (raa) and they have come right next to each other. The first one comes with Sukoon, the second with tanween (double Dammah), so they are written as one ر (raa) with a Shadda above سِرٌّ (serron) and recited with emphasis.
Here is other example for the same rule:
شَرْرٌ—————–شَرٌّ
2. Use shaddah when the last letter of first word is the same one of the first letter of second word
We can see the Shadda at level of the phrase. For example, look at following the sentence لَنْ نَلعب اليوم (lan nalaab al youm) you will find the last letter of first word is the same one of the first letter of second word, The first one comes with Sukoon, the second with a short vowel, so they are written as one ن (Noon) with a Shadda above لَن نّلعب اليوم and recited with emphasis.
Here is other example for the same rule:
رَبِحَتْ تَجَارَتُهُمْ————— رَبِحَت تِّجَارَتُهُمْ
3. Shadda for the sun letters
In Arabic, we have Moon letters and Sun letters. Sun letters are 14 in number:
ت، ث، د، ذ، ر، ز، س، ش، ص، ض، ط، ظ،ن، ل
As we have said that, Shadda is a diacritic in Arabic that indicates the doubling of a consonant. You can see the Shaddah sign as the following shape ّ, so it looks like a tiny س (seen) placed above the letter. When Shadda is used for the sun letters, it suggests that the consonant is assimilated with the subsequent ل (laam) and we don’t pronounce the ل (laam). For example, الشّمس ) ash-shams), السّماء (as-samā’) and الّرّجل(ar-rajul).
More examples of Shadda used with Sun letters:
| Original Word | Word with Shadda | Pronunciation | Meaning |
| الذْذِكر | الذِّكر | aḏ-ḏikr | The remembrance |
| الرْرِيح | الرِّيح | ar-rīḥ | The wind |
| السْسِراج | السِّراج | as-sirāj | The lamp |
| الشْشَارع | الشَّارع | ash-shāriʿ | The street |
| الصْصِراط | الصِّراط | aṣ-ṣirāṭ | The straight path |
| الضْضَرورة | الضَّرورة | aḍ-ḍarūra | The necessity |
| الطْطِفل | الطِّفل | aṭ-ṭifl | The child |
| الظْظَلام | الظَّلام | aẓ-ẓalām | The darkness |
| النْنَاس | النَّاس | an-nās | The people |
| اللْلَيل | اللَّيل | al-layl | The night |
That’s why we, at Kalimah Center, always stress the importance of grasping the sun and moon letters right from the start. When students grasp the sun and moon letters early on, their reading, writing and speaking skills become much easier.
And here is, for instance, and excerpt from Iqraa book which we use in Kalimah’s Online Arabic Course to show you how we teach sun and moon letter.
You can Join us for a FREE trial class, and see for yourself.
4. Shadda of phonetically similar/adjacent consonants
Sometimes we have phrase consisting of two words and the last letter of the first word and the first letter of the second word, and they are phonetically similar to each other when you pronounce them for example, قدْ تَقطع ( qad taktaa), the first letter which is د (daal )comes with Sukoon, the second with which is ت (taa) comes a short vowel, so when we pronounce them they become one and we pronounce it with Shadda قد تّقطع.
Here are other examples for the same rule:
هلْ رَبح—————هل ربّح
قدْ تَكلم—————قد تّكلم
وَقُلْ رَبِّ————– وَقُل رَّبِّ
Sometimes the first word comes as a preposition. For example, أنْ يَذهب , you will see the first word, which is a preposition, ends with Noon Sakina (نْ) which is assimilated to the following letter ي (yaa) and changed it into a double sound أن يّذهب (ayythhba). The second word always starts with one of the letters(ي- ر-م- ل- و- ن).
Here are other examples for the same rule:
أنْ يَسمع—————– أن يّسمع
أنْ نَجَمَع—————— أن نّجمع
You also can see it with Tanween. For example, نعمةً مِن. So, the Tanween is assimilated to the following letter and changed it to a double letter نعمةً مِّن .
Here are other examples for the same rule:
غَفُورٌ رَحِيمٌ——————- غفورٌ رَّحِيمٌ
رَجُلٌ مُؤَدَبّ—————َرجُلٌ مُّؤَدَبّ
5. Shadda in Verb Conjugation
Some verbs in Arabic end in a double letter. For example, (عضَّ ) addaa, (ظَنَّ) (thanaa), (اسْتَعَدَّ) (aestadda), (اسْتَمَرَّ) (astamraa). When these verbs are with some pronouns, the doubled letter has to be repeated twice, but with others, it remains one letter with Shadda. To make it simple, let’s see some examples of doubled verbs conjugated in the past tense with pronouns with two words ( أحسَّ- عضَّ)
| Meaning | Word | Meaning | Word | Pronoun |
| to bite | عضَّ(adda) | to feel | أحسَّ(ahassa) | |
| I bit | عضضدتُ(addadtu) | I felt | أحسستُ (ahsastu) | أنا I |
| you bit | عضضدتَ(addadta) | you felt | أحسستَ(ahsasta) | أنتَ you (masculine singular) |
| you bit | عضضدتِ (addadti) | you felt | أحسستِ(ahsasti) | أنتِ you (feminine singular) |
| he bit | عضَّ(adda) | he felt | أحسَّ (ahassa) | هو he |
| she bit | عضّت(addat) | she felt | أحسّت(ahsasat) | هي she |
| they bit | عضّا (addaa) | they felt | أحسّا(ahsasaa) | هما they (masculine plural) |
| they bit | عضّدتا (addadta) | they felt | أحسّتا (ahsasta) | هما they (feminine plural) |
| we bit | عضضنا(addadna) | we felt | أحسسنا(ahsasna) | weنحن |
| you bit | عضضتُما (addadtuma) | you felt | أحسستُما(ahsastuma) | you (dual masculine and أنتما feminine) |
| you bit | عضضتم(addadtum) | you felt | أحسستم(ahsasttum) | you (masculine plural)أنتم |
| you bit | عضضتنّ(addadtunna) | you felt | أحسستنّ(ahsasttunna) | you (feminine plural) أنتنّ |
| They bit | عضّوا(addawa) | they felt | أحسّوا(ahsasu) | they (masculine plural) هم |
| they bit | عضضنّ(addadtunna) | they felt | أحسسنّ(ahsastunna) | they (feminine plural)هنّ |
Learn more about: Arabic Verb Conjugation And How To Conjugate Verbs

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Want to Master the Shaddah in Arabic? Kalimah Can Help
To really understand and use shaddah correctly, you need more than just information. You need practice and guidance from experienced teachers.
Our online Arabic courses will help you:
- Master the basics: We’ll start with the Arabic alphabet and build a strong foundation for understanding the Shaddah.
- Learn the rules: Our expert teachers will explain the rules of Shaddah in a clear and simple way.
- Practice with interactive exercises: You’ll get plenty of opportunities to practice using the Shaddah in different contexts.
- Improve your pronunciation: We’ll help you pronounce words with Shaddah correctly, so you can speak Arabic fluently and confidently.
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FAQs
What does Shadda mean in the Quran?
When you see Shadda in the Quran that means you must pronounce the letter with double sound. In addition, Shadda is included in many rules in the Quran. For example, we you see the letter ن (noon) or م (meem) have Shadda you must do Gunnah with 2 counts. For example, in the words إنَّ (inaa) and عَمَّ (amma) both of the letter ن (noon) or م (meem) have Shadda. So, I must do Gunnah with 2 counts.
How do you add Shadda in Arabic?
To add Shadda in Arabic, do the following steps:
- Write the consonant you want to double.
- Place the Shadda above this consonant.
For example, I want to add Shadda in the letter ر in the word فرق, it will be فَرَّقَ (farraq)
How to write the Shadda on the keyboard?
If you want to write Shadda on the keyboard, you can do the following methods:
For window: You will first write the consonant you want to double. Then, you press SHIFT+ ~ (tilde key).
For Mac: You will first write the consonant you want to double. Then, you press OPTION + “ key (the apostrophe key)
Conclusion:
Shaddah (شدة) is a critical diacritical mark in Arabic, represented as (ّ) above a letter to indicate the doubling of a consonant. It combines two identical sounds: the first with sukoon (a pause) and the second with a vowel, ensuring precise pronunciation and meaning.
For instance, in the word عمَّ (amma), the “م” is pronounced twice, emphasizing the letter. Shaddah cannot occur at the beginning of a word and plays a vital role in verb conjugations, sun letters, and blending sounds in phrases.
Mastering Shaddah is essential for accurate reading, writing, and pronunciation in Arabic. It also contributes to specific sounds like “ghunna,” a nasalization effect when applied to ن (noon) or م (meem). Understanding its rules and proper usage helps learners grasp the nuances of Arabic, making it an indispensable element of the language.