This is the 4968th most frequent Japanese word.
立ち去る
"To leave" or "to go away."
The word '立ち去った' is used as a past action meaning 'left' or 'departed', focusing on the act of leaving a location.
彼は何も言わずにその場を立ち去った。
He left the place without saying anything.
Here, '立ち去る' describes the act of the friend leaving, emphasizing departure.
私は友人が立ち去るのを見て、とても悲しかったです。
I was very sad watching my friend depart.
In this sentence, '立ち去る' is used to convey the necessity of leaving a place due to circumstances.