Salaamun alaikum,
I seek refuge in God from satan the rejected.
In the name of God, the All Gracious, the All Merciful.
[30:22] And amongst His signs is that He created the skies and the land and the variations of your languages and your colors. Indeed in this there are signs for the knowledgeable.
[14:4] And We did not send any messenger except in the language of his people in order to clarify for them, thereafter, God sends astray whomever He wills and guides whomever He wills. And He is The Almighty, The All Wise.
[35:24] We have surely sent you truthfully as a bearer of good news as well as a warner. And there is not a single people who did not have a warner in its midst.
God is a universal concept. The diversity of languages are a sign from God. Every people have had warners. Every language has a word for God. Every messenger warned in the language of his people, so would have used the word for God in their own language. Whatever language we speak in, we should use the word for God in that language. Arabic just happens to be the language of the chronologically final scripture. There is no need to use the word for God in the Arabic language when conversing in other languages.
Peace.