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.
verb (used with object)
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.
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.
perk
n.
1869, shortened and altered form of perquisite (q.v.); as a verb, 1934 as shortened and altered form of percolate.
Restore to good spirits, liveliness, or good appearance, as in You're exhausted, but a cup of tea will perk you up, or The flowers perked up the whole room. [Mid-1600s]
