1. ergative phrasal verb & phrasal verb If something perks you up or if you perk up, you become cheerful and lively, after feeling tired, bored, or depressed. [V P] ⇒ He perks up and jokes with them. [V n P] ⇒ ...suggestions to make you smile and perk you up. [Also V P n (not pron)] 2. phrasal verb
If you perk something up, you make it more interesting. [V n P] ⇒ To make the bland taste more interesting, the locals began perking it up with local produce. [V P n] ⇒ Psychological twists perk up an otherwise predictable storyline.
3. ergative phrasal verb & phrasal verb → perk If sales, prices, or economies perk up, or if something perks them up, they begin to increase or improve. [journalism] [V P] ⇒ House prices could perk up during the autumn. [V P n] ⇒ Anything that could save the company money and perk up its cash flow was examined. [Also V n P]
COBUILD Advanced English Dictionary. Copyright © Harper Collins Publishers