fact
Americannoun
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facts
plural
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that which actually exists or is the case; reality or truth.
Your fears have no basis in fact.
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something known to exist or to have happened.
Space travel is now a fact.
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a truth known by actual experience or observation; something known to be true.
Scientists gather facts about plant growth.
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something said to be true or supposed to have happened.
The facts given by the witness are highly questionable.
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Law. Often facts. an actual or alleged event or circumstance relevant to a case, as distinguished from the legal effect of that event or circumstance.
interjection
idioms
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before the fact, prior to the commission of a crime.
an accessory before the fact.
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after the fact, after the commission of a crime.
an accessory after the fact.
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in fact, actually; really; indeed.
In fact, it was a wonder that anyone survived.
noun
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an event or thing known to have happened or existed
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a truth verifiable from experience or observation
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a piece of information
get me all the facts of this case
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law (often plural) an actual event, happening, etc, as distinguished from its legal consequences. Questions of fact are decided by the jury, questions of law by the court or judge
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philosophy a proposition that may be either true or false, as contrasted with an evaluative statement
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criminal law after the commission of the offence
an accessory after the fact
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criminal law before the commission of the offence
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in reality or actuality
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an inescapable truth, esp an unpleasant one
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the truth
Other Word Forms
Derived Forms
Inflected Forms
Nouns
Etymology
Origin of fact
First recorded in 1530–40; from Latin factum “something done, deed,” noun use of neuter of factus “done,” past participle of facere “to do, make”; see also do 1
Explanation
You can't argue with facts: a fact is something proven to be true. It's important to distinguish between fact and fiction. When someone says, "Is that a fact?" they're asking "Is that really true?" When a detective says, "Give me the facts," he only wants information that is rock solid and confirmed. The job of science is to study things and figure out what the facts are in every field. Theories and opinions are not facts: you need to have proof for something to be a fact.
Vocabulary lists containing fact
The Language of Standardized Tests, List 1
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Jim Burke's Academic Vocabulary List
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Argumentative Writing
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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.
See Examples For:
In fact, Morocco's economy is booming, at least on the surface, but experts say the persistent allure of life on the other side of the border is rooted in deeper anxieties, particularly among the young.
From Barron's ● Aug. 15, 2026
“The MMR vaccine does not cause autism,” the group says on an online fact page, adding that the measles vaccine prevents thousands of deaths a year worldwide.
From Los Angeles Times ● Aug. 15, 2026
In the Air India case, investigators will need to establish much more than the alleged fact that the captain's confirmatory test was positive.
From BBC ● Aug. 15, 2026
In fact in the case of the 2012 Lucasfilm purchase, Disney was buying back stock at such a clip that its total shares outstanding dropped that year.
From The Wall Street Journal ● Aug. 14, 2026
What he was looking for was some sort of prior warning… some sort of proof that the Afterlife did, in fact, love him.
From "The Undead Fox of Deadwood Forest" by Aubrey Hartman
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As Baldacci says in an essay this week, “Arguing about facts doesn’t deter outlandish ideas, misinformation or AI hallucination. Maybe more storytelling, more imagination, more fiction is what’s needed to combat the unreality spun online.”
From The Wall Street Journal ● Aug. 15, 2026
"If a federal prosecution has been completed on a matter, the state cannot prosecute the matter on those same facts," said Mitchell Epner, a white-collar attorney and former federal prosecutor.
From BBC ● Aug. 13, 2026
When reporters confronted Health and Human Services Secretary Robert F. Kennedy Jr. with these facts, he responded that such criticisms were “invalid” and that the cyclosporiasis outbreak was “under control.”
From Los Angeles Times ● Aug. 13, 2026
All book adaptations, whether from novels or memoirs, could stand to embellish the facts here and there, or go ahead and reinvent the wheel when possible.
From Salon ● Aug. 12, 2026
While she rattled off a few facts about Julia and Ellen, I stuffed my book into my bag.
From "Bye Forever, I Guess" by Jodi Meadows
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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.