彼は粋を利かせて、二人を残して先に帰った。
He tactfully went home first, leaving the two of them alone.
粋が身を食うというとおり、彼は遊びで財産を失った。
As the saying goes, sophistication in the pleasure quarters eats a man alive; he lost his fortune to his amusements.
ここは粋を通して、何も言わずに見送ってやろう。
Let's be tactful about this and see them off without saying a word.