panic
1 Americannoun
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a sudden overwhelming fear, with or without cause, that produces hysterical or irrational behavior, and that often spreads quickly through a group of persons or animals.
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an instance, outbreak, or period of such fear.
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Finance. a sudden widespread fear concerning financial affairs leading to credit contraction and widespread sale of securities at depressed prices in an effort to acquire cash.
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Slang. someone or something that is considered hilariously funny.
The comedian was an absolute panic.
adjective
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of the nature of, caused by, or indicating panic.
A wave of panic buying shook the stock market.
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(of fear, terror, etc.) suddenly destroying the self-control and impelling to some frantic action.
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Panic, of or relating to the god Pan.
verb (used with object)
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to affect with panic; terrify and cause to flee or lose self-control.
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Slang. to keep (an audience or the like) highly amused.
verb (used without object)
noun
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Also called panic grass. any grass of the genus Panicum, many species of which bear edible grain.
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the grain.
noun
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a sudden overwhelming feeling of terror or anxiety, esp one affecting a whole group of people
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(modifier) of or resulting from such terror
panic measures
verb
adjective
Synonym Usage
See terror.
Other Word Forms
Derived Forms
Inflected Forms
Participles
Conjugated Forms
Present
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panicsimple
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panicssimple
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have panickedperfect
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has panickedperfect
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am panickingprogressive
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are panickingprogressive
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is panickingprogressive
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have been panickingperfect progressive
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has been panickingperfect progressive
Past
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panickedsimple
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had panickedperfect
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was panickingprogressive
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were panickingprogressive
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had been panickingperfect progressive
Future
Etymology
Origin of panic1
First recorded in 1580–90; earlier panique, from French, from Greek Panikós “of Pan”; see Pan, -ic
Origin of panic2
First recorded in 1375–1425; late Middle English panik, from Latin pānicum “Italian millet”
Explanation
To panic is to become filled with fear and anxiety. Someone in a panic is totally freaking out. Have you ever heard someone say "Don't panic"? That's easier said than done. People panic when they lose control over themselves because of fear, stress, or danger. A pilot who runs into turbulence and then flees from the cockpit has panicked. A surgeon who makes a mistake might panic for a second, before chilling out and helping the patient. It's hard to do a good job when you panic. Panicking is pretty much the opposite of relaxing.
Vocabulary lists containing panic
Emotions on Display
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You Name It: Eponyms
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Common Five-letter Words for Wordle, List 1
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Probably a satire inspired by the Panic of 1873, the painting humorously anthropomorphizes animals to show the chaos of the market, with each contingent fighting for control.
From The Wall Street Journal • Jun. 20, 2026
There’s even a rooftop scene that’s a homage to Al Pacino’s first leading film role, in “The Panic in Needle Park.”
From Los Angeles Times • Apr. 20, 2026
He took his investment-banking concept into railroads, where he went broke and helped trigger the Panic of 1873 External link.
From Barron's • Mar. 25, 2026
Panic attacks are an extreme anxiety responses and can develop quickly, with very intense physical and mental symptoms.
From BBC • Mar. 22, 2026
Panic swelled like a blood blister inside me as the forest parted.
From "The City Beautiful" by Aden Polydoros
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.