This is the 10082nd most frequent Japanese word.
過ぎ去り
"過ぎ去り" means "passing away" or "having passed."
Here, '過ぎ去りし' (sugisari-shi) is used as a poetic form to describe time that has passed, emphasizing its finality and memory.
過ぎ去りし時を思い出す。
I recall the past times that have passed.
In this sentence, '過ぎ去り' (sugisari) indicates that the storm has moved away or ended, denoting the completion of an event.
嵐は過ぎ去り、空が晴れた。
The storm passed away, and the sky cleared up.
Here, '過ぎ去りゆく' (sugisari-yuku) conveys the ongoing process of seasons passing away, blending the notion of passage and continuation.