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Lesson 04

Sukoon & Shadda — السكون والشدة

Two important diacritical marks that control pronunciation: sukoon stops the vowel, shadda doubles the letter.

بْ

Sukoon — السكون

A small circle (ـْ) above a letter means it has no vowel — the sound stops there. The letter is 'resting'.

Sukoon examples

بْ
تْ
كْ
سْ
مْ
نْ
لْ
رْ
When a letter has sukoon, it has no vowel sound. It is pronounced short and crisp with no 'a', 'i', or 'u' sound.
بَّ

Shadda — الشدة

A small W-shape (ـّ) above a letter means it is doubled — pronounce the letter twice, the first with sukoon and the second with its vowel.

Shadda examples

بَّ
تَّ
كَّ
سَّ
مَّ
نَّ
لَّ
رَّ
A letter with shadda is pronounced twice: first without a vowel (as if it has sukoon), then with its vowel sound.

Sukoon vs Shadda — Key Difference

MarkSymbolMeaningExamples
Sukoon (السكون)ـْNo vowel — the letter rests
بْتْكْسْ
Shadda (الشدة)ـّDoubling — the letter is repeated
بَّتَّكَّسَّ
إِيَّاكَ نَعْبُدُ

iyyāka naʿbudu — 'You alone we worship' (Al-Fatiha). Shadda on Yaa, sukoon on the Ain.