- to become lively, cheerful, or vigorous, as after depression or sickness (usually followed by up): The patients all perked up when we played the piano for them.
- to act, or carry oneself, in a jaunty manner.
- to put oneself forward briskly or presumptuously.
- to make smart, trim, or jaunty (sometimes followed by up or out): to perk up a suit with a new white blouse.
- to raise smartly or briskly (often followed by up or out): to perk one's head up.
- to percolate: Has the coffee perked yet? The research team is perking with new ideas.
- pert; brisk; lively
- See perk up
- (of coffee) to percolate
- to percolate (coffee)
- British informal short for perquisite
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