1. To become cheerful; SYN. cheer up, chirk up.
2. To give encouragement to; SYN. hearten, recreate, embolden.
3. To make cheerful; SYN. cheer up, jolly along, jolly up.
4. To show approval or good wishes by shouting.
5. To urge on or encourage esp. by shouts; SYN. inspire, urge, barrack, urge on, exhort, pep up.