How Do You Pronounce Dhaa (ظ)?
A heavy th of "this". English does not have it.
The sound, and why English cannot spell it
English has no ظ. Put your tongue between your teeth as if saying the th in this, switch the voice on, then say it heavy, with the back of the tongue raised and the mouth full. It is Dhal (ذ) said with weight.
This letter is why careful transliteration writes dh, not z. Al-Adheem (الْعَظِيم), the Magnificent, is often misspelled Azim, but the sound is a heavy dh between the teeth, never a z.
You will hear it in عَظِيم (adheem, magnificent) in the tasbih of ruku, subhana rabbiyal-adheem.
The four written forms
Arabic letters change shape by position, alone, at the start, in the middle, and at the end of a word.
Dhaa with harakat
The three short vowels: fatha says "a", kasra says "i", damma says "u".
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