This is the 3821st most frequent Japanese word.
やがて
Eventually; soon; before long.
やがて expresses the natural result occurring, emphasizing the transition after some time.
やがて雨がやんで、虹が見えるでしょう。
Eventually, the rain will stop, and you will see a rainbow.
やがて indicates a certainty that occurs after some effort or progression of time.
彼はやがて成功するだろう。
He will succeed eventually.
やがて implies the inevitability of an outcome following the completion of ongoing events.