godan verb (-ru), transitive verb
show regret; seem disappointed; appear bitter
Describes someone outwardly expressing regret or disappointment about an outcome. Often used when the person's feelings are visible to others.
彼は負けたことを残念がっていた。
He was showing regret over losing.
彼女はその知らせを聞いて残念がっ
She seemed disappointed when she heard the news.