Perk

[purk] /pɜrk/

verb (used without object)
1.
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.
2.
to act, or carry oneself, in a jaunty manner.
3.
to put oneself forward briskly or presumptuously.
verb (used with object)
4.
to make smart, trim, or jaunty (sometimes followed by up or out):
to perk up a suit with a new white blouse.
5.
to raise smartly or briskly (often followed by up or out):
to perk one’s head up.
adjective
6.
; jaunty:
a perk manner.
[purk] /pɜrk/
verb (used with or without object), Informal.
1.
to percolate:
Has the coffee perked yet? The research team is perking with new ideas.
[purk] /pɜrk/
noun, Informal.
1.
.
/pɜːk/
adjective
1.
pert; brisk; lively
verb
2.
See perk up
/pɜːk/
verb (informal)
1.
(intransitive) (of coffee) to percolate
2.
(transitive) to percolate (coffee)
/pɜːk/
noun
1.
(Brit, informal) short for perquisite
v.

late 14c., “to make oneself trim or smart,” perhaps from Old North French perquer “to perch” (Modern French percher; see perch (n.1)), on notion of a bird preening its plumage. Sense of “raise oneself briskly” is first attested 1520s; perk up “recover liveliness” is from 1650s. Related: Perked; perking.
n.

1869, shortened and altered form of perquisite (q.v.); as a verb, 1934 as shortened and altered form of percolate.

noun

Percolated coffee (1950s+)

verb

To run smoothly and well; percolate: The project’s perking now (1925+)

noun

Extra money, privileges, fringe benefits, etc, pertaining to a job or assignment: His men were delighted to be in Afghanistan, he said, mostly because of the perks

[1824+; fr perquisite]
perquisite