This is the 5128th most frequent Arabic word.
بأسرع
"As quickly as."
The word "بأسرع" is used here to express doing something in the fastest manner possible, emphasizing the speed of the action.
وصلتُ إلى المحطة بأسرع ما يمكن.
I arrived at the station as quickly as possible.
"بأسرع" is used here to describe the quickest method in which the task of writing the letter was carried out.
كتبت الرسالة بأسرع طريقة ممكنة.
I wrote the letter in the quickest possible way.
Here, "بأسرع" emphasizes the urgent and fast response required to address the situation.