What does fact mean?
A fact is a piece of information that corresponds to reality — something observed, verified, or capable of being demonstrated rather than merely believed or asserted. The word serves as a cornerstone of rational discourse: journalists, scientists, lawyers, and historians all rely on the distinction between facts, on the one hand, and opinions, interpretations, or falsehoods on the other. In everyday speech, fact appears most often in fixed expressions such as "in fact," used to emphasize or correct a point, and "the fact that," which introduces an accepted premise. Its authority cuts both ways: appeals to "the facts" lend weight to an argument, but disputes over what actually counts as a fact make the term central to debates about evidence and misinformation. Derived forms like factual and factually extend this sense of grounded, verifiable accuracy.
Something that is known or proved to be true; a piece of information based on reality.
"The detective gathered every relevant fact before naming a suspect."
Often used in the plural ("the facts") to refer collectively to verified information about a situation.
(Law) An actual deed, event, or circumstance, especially as distinguished from its interpretation or legal consequence.
"The jury must decide questions of fact, while the judge decides questions of law."
The plural is standard and common, typically referring to multiple pieces of verified information; "facts" contrasts with "opinions" and "fiction" in ordinary usage.
"Before drawing conclusions, check your facts carefully."
"Fact" comes from the Latin facere, "to do" — so a fact is literally "a thing done," which is why in law a fact can be a deed as well as a truth.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of fact
The English word "fact" derives from Latin factum, meaning "a thing done or performed," the neuter past participle of facere, "to do or make." It entered English in the early 16th century, first carrying the legal sense of an act or deed, before shifting by the late 16th century toward its modern meaning of something known to have occurred or to be true. It shares this root with a large family of Latinate words including effect, perfect, manufacture, and factory, all built on the idea of doing or making.
Related word forms
How fact is actually used
"Fact" carries a connotation of objectivity and verifiability, so calling something a fact asserts more than merely calling it true — it implies evidence exists. The phrase "in fact" often signals a correction or emphasis rather than literal new information. Avoid the informal redundancy "true fact." In careful usage, distinguish "facts" from "opinions" and "findings": findings are results of inquiry, not necessarily settled truths.
Easily confused with fact
A facet is one aspect or side of something (often of a gem or an issue), whereas a fact is a piece of information that is true.
A faction is a small organized dissenting group within a larger one, while a fact is a verified truth.