How to say "God" in Arabic
CognateMeaningGod
Arabic · Modern Standard Arabic
اَللّٰه
allāhאללה
الله
Hebrew · Modern Hebrew
אלוהים
elohimإِلُوهِيم
How the two words are related
Cognate
Same Semitic root, same meaning — you already know this word.
Arabic root
أ-ل-هHebrew root
א-ל-הAllāh is simply al- + ilāh, "the God". That ilāh is the exact cognate of Hebrew אלוה (the singular behind אלוהים) and of אל — the same ancient Semitic word for deity.
Related Hebrew word:אלוהeloaإِلُوَا
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In a phrase
إِن شَاءَ اللّٰه
in shāʾ allāhאן שאא אללהGod willing