Verb: perk up
- Cause to be alert and energetic
"she will perk up after a coffee";
- stimulate, arouse, brace, energize, energise [Brit], stir
- Gain or regain energy
"After his morning coffee, he perked up considerably";
- perk, percolate [N. Amer, informal], pick up, gain vigor [US], gain vigour [Brit, Cdn]
Derived forms: perks up, perked up, perking up
Type of: affect, convalesce, recover, recuperate
Antonym: calm