This is the 1310th most frequent Arabic word.
كي
"كي" in Arabic means "in order to" or "so that."
In this sentence, 'كي' is used to express the purpose or goal of the action.
أدرس كي أنجح.
I study in order to succeed.
Here, 'كي' indicates a preventative purpose or reason for the action.
كي لا تصل متأخراً، انطلق الآن.
So that you don't arrive late, start now.
In this context, 'كي' is used to introduce the intended result or outcome.