Translation for "cheer-up" to french

Cheer-up

verb

• agrémenter
• se dérider
• s'égayer

Translation examples

se dérider verb

Now come on boys, will you cheer up?
Allez, les gars, on se déride.

Cheering up, are we?
On se déride?

Or when they told Sylvia Plath, "Syl, cheer up."
Et Sylvia Plath qui aurait dû se dérider...