This is the 6468th most frequent Arabic word.
اكتفى
"اكتفى" means "to be satisfied" or "to suffice."
In this sentence, "اكتفت" is used to express the idea of finding something sufficient or enough.
اكتفت الطالبة بدراسة الملاحظات فقط للامتحان.
The student sufficed with studying just the notes for the exam.
Here, "اكتفوا" conveys the sense of being content or satisfied with what was provided.
اكتفوا بالوجبة الخفيفة ولم يطلبوا وجبة كاملة.
They were content with the light snack and did not order a full meal.
The word "تكتفي" in this context indicates deciding to limit oneself to an option deemed adequate.