expression, godan verb (-su)
cheer up; perk up; get one's spirits up
Often used in commands or requests to encourage someone else to cheer up. Can also refer to oneself making an effort to become cheerful.
See also: 元気が出る (げんきがでる)
元気を出して、また頑張ろう。
Cheer up and let's try again.
彼女はなかなか元気を出さない。
She just won't cheer up.