Answering a question someone asked on Quora: How do you say OK in Arabic?
In MSA, you would say: jayyid جيد (means: good)
However, since this is a colloquial expression, it will change from one country to another or from one region to another.
In Algeria for example, we say: Sa77a صحة (means: health)
In Egypt or the Levant, people say: Tayyeb طيب (means good, for food or people)
in the Arab Gulf, people say: zeen زين (means: beauty)
That being said, people do say OK all over the Arab world, just like in English. In Arabic, I have seen it spelt these two ways:
أوك - أوكي
Link to Quora post: https://arabiclanguage.quora.com/In-Arabic-how-do-you-say-okay?ch=17&oid=183436177&share=e81de644&srid=3pzki&target_type=question