(1)より愉快になる
(2)become more cheerful; "after a glass of wine, he lightened up a bit"
さらに詳しく
(1)自信がわいてくる
(2)望みや勇気を与える
(3)拍車を掛ける
(4)spur on
(5)spur on; "His financial success encouraged him to look for a wife"
