From WordNet (r) 3.0 (2006):
cheer
n 1: a cry or shout of approval
2: the quality of being cheerful and dispelling gloom; "flowers
added a note of cheerfulness to the drab room" [syn:
cheerfulness, cheer, sunniness, sunshine] [ant:
uncheerfulness]
v 1: give encouragement to [syn: cheer, hearten, recreate,
embolden] [ant: dishearten, put off]
2: show approval or good wishes by shouting; "everybody cheered
the birthday boy"
3: cause (somebody) to feel happier or more cheerful; "She tried
to cheer up the disappointed child when he failed to win the
spelling bee" [syn: cheer, cheer up, jolly along,
jolly up]
4: become cheerful [syn: cheer, cheer up, chirk up] [ant:
complain, kick, kvetch, plain, quetch, sound off]
5: spur on or encourage especially by cheers and shouts; "The
crowd cheered the demonstrating strikers" [syn: cheer,
root on, inspire, urge, barrack, urge on, exhort,
pep up]