perk up

perk

1 [purk]
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.
perky; jaunty: a perk manner.

Origin:
1350–1400; Middle English perken; perhaps akin to peer2

perkingly, adverb
perkish, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
perk1 (pɜːk)
 
adj
1.  pert; brisk; lively
 
vb
2.  See perk up
 
[C16: see perk up]

perk2 (pɜːk)
 
vb
1.  (intr) (of coffee) to percolate
2.  (tr) to percolate (coffee)

perk3 (pɜːk)
 
n
informal (Brit) short for perquisite

perk up
 
vb
1.  to make or become more cheerful, hopeful, or lively
2.  to rise or cause to rise briskly: the dog's ears perked up
3.  (tr) to make smarter in appearance: she perked up her outfit with a bright scarf
4.  slang (Austral) (intr) to vomit
 
[C14 perk, perhaps from Norman French perquer; see perch1]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

perk
late 14c., "to make oneself trim or smart," perhaps from O.N.Fr. perquer "to perch" (Fr. percher; see perch (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.

perk
1869, shortened and altered form of perquisite (q.v.); 1934 as shortened and altered form of percolate (see percolation).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Abbreviations & Acronyms
perk
perquisite
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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American Heritage
Idioms & Phrases

perk up

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]

The American Heritage® Dictionary of Idioms by Christine Ammer.
Copyright © 1997. Published by Houghton Mifflin.
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