To cheer loudly and with great enthusiasm.
To drive oneself into a frenzy from cheering.
I totally cheered it up when the Celtics won.

Did you see Liz cheer it up at the show last night?
by Mathy Cathie January 29, 2011
Get the cheer it up mug.
A phrase used to make a friend feel better if she's in a crappy mood.
Jenny: "O Charleton, my life sucks!"
Charleton: "Cheer up Buttercup!"
Jenny: "O Charleton, I feel so much better! Please marry me!"
by Charleton January 20, 2006
Get the cheer up buttercup mug.
A prescription given to "hysterical" women before antidepressants and Xanax were invented.
My wife just had a baby and is suffering from post-partum depression, so the doctor prescribed her to "cheer up, bitch!".
by Betchaann June 20, 2020
Get the Cheer up, bitch! mug.
A short-term positive action to make you momentarily happy whilst adverting your long-term mental or emotional anguish.
i.e. She ate Ice Cream as a cheer-up-quickie
by J P Lyons June 2, 2006
Get the cheer-up-quickie mug.