Mu'izz
Mu'izz comes from the Arabic root ʿ-z-z, which relates to honor, might, and dignity; the name means 'honorer' or 'one who gives honor.'
Yes. It appears prominently in regnal titles like Al-Mu'izz li-Din Allah; such usages are attested in Fatimid and medieval Islamic histories.
No specific proper-name form 'Mu'izz' appears as a personal name in the Quran; however, the root ʿ-z-z occurs in various contexts referring to might and honor.
Yes. Mu'izz and its compounds (e.g., Mu'izzuddin) are used in South Asian Muslim communities and are recognized as historically rooted Arabic names.
In Classical Arabic the name has a voiced pharyngeal element (mu-ʿizz); in South Asian pronunciations it is often rendered as 'Mu-izz' or 'Muizz'.