This is the 286th most frequent Vietnamese word.
dần
Gradually; slowly.
Here, "dần" shows the slow development or acquisition of understanding.
Anh ấy dần hiểu ra sự việc.
He gradually understands the situation.
In this case, "dần" emphasizes the incremental progress towards achieving a goal.
Họ dần tìm thấy mục tiêu của mình.
They are gradually finding their goal.
In this context, "dần" indicates progression or a gradual process.