perk up

phrasal verb

Definition of perk up 

informal

1 : to become more lively or cheerful or to make (someone) more lively or cheerful We perked up when we heard the good news. The good news perked everyone up.

2 : to make (something) fresher or more appealing The new paint job really perked up the room.

3 chiefly US, of an animal's ears : to be lifted in a quick and alert way The dog's ears perked up. often used figuratively of a person My ears perked up when I heard my name mentioned.

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exaggeratedly or childishly emotional

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