cari istilah yang lo mau, kaya' bae:
 
1.
the act of becoming chipper, cheerful or lively due to a sudden change of circumstances...

instant mood lifter
to become more high-spirited
I was down all day but when I saw my mom calling my phone, I chippered up and answered it with a smile.

I was so stressed at work, but when I saw my crush walk past, I chippered up and said hello to him with a smile.
dari wordsmith killer Kamis, 12 Desember 2013