A fact is something known to be true or real, based on evidence or direct observation. Facts can be verified and are distinct from opinions, beliefs, or guesses.
What Does Fact Mean?
Fact comes from Latin factum, the past participle of facere meaning "to do or make". In early English (16th century) it meant a deed or action — hence legal phrases such as "after the fact" (after the crime was committed). Over time the meaning shifted to "something that has actually happened or is the case", and eventually to the modern sense of "a piece of verified information".
Today, fact is one of the most common nouns in English. It appears in everyday conversation ("That's a fact!"), academic writing ("The research presents the following facts"), journalism, law, and philosophy. The plural facts is used constantly in expressions like "the facts of the case", "stick to the facts", and "face the facts".
A key distinction for English learners: a fact is objective and verifiable, whereas an opinion is subjective. Many advanced grammar structures in English — particularly in academic and formal writing — exist precisely to signal this distinction, for example "It is a fact that…" versus "I believe that…".
Example Sentences (A2–C1)
| Sentence | Level & note |
|---|---|
| The fact is, exercise improves mental health. | A2 — basic statement; "the fact is" introduces a truth |
| I know this is a strange fact, but sharks are older than trees. | B1 — countable noun used to introduce an interesting piece of information |
| Despite the facts, some people still refused to change their minds. | B1 — plural; common in discussions about evidence and persuasion |
| The fact that she had no prior experience made her achievement even more impressive. | B2 — "the fact that" clause, formal written English |
| In point of fact, the committee had been aware of the discrepancy for several months before it was publicly acknowledged. | C1 — formal expression; used to introduce a correction or additional precise information |
Common Collocations
| Collocation | Example |
|---|---|
| in fact | I thought it would be difficult; in fact, it was straightforward. |
| as a matter of fact | As a matter of fact, I have been to Tokyo twice. |
| the fact that | The fact that he apologised shows good character. |
| face the facts | It is time to face the facts and accept the result. |
| stick to the facts | Please stick to the facts and avoid personal opinions. |
| a hard fact | The hard fact is that resources are limited. |
| establish a fact | The investigation established the facts of the case. |
| a well-known fact | It is a well-known fact that regular sleep improves concentration. |
Usage Notes — Formal vs Informal
Formal English
In formal and academic writing, use in point of fact, the fact that + noun clause, or as a matter of fact to present verified information with precision. Example: The fact that mortality rates declined substantially supports the hypothesis.
Neutral / Everyday English
In fact and the fact is are common in speech and writing at all registers. They introduce a clarification, correction, or emphasis. Example: I was going to say no; in fact, I said yes.
Informal English
In informal conversation, fact often appears in short exclamations or emphatic phrases: "That's a fact!", "No, that's not a fact at all!", "Fun fact — bees can recognise human faces." The phrase fun fact is very popular on social media and in casual speech.
Legal English
In legal contexts, fact has a precise meaning: an event or circumstance that can be proved by evidence. Key phrases include question of fact (decided by a jury) versus question of law (decided by a judge), and accessory after the fact (someone who helps a criminal after the crime).
Etymology Note
From Latin factum ("thing done"), past participle of facere ("to do, make"). Related English words from the same root include factor, manufacture (literally "made by hand"), artifact (something made by human skill), effect, and the suffix -faction (as in satisfaction). The word entered English in the 16th century through legal and scholarly Latin. Its current dominant sense — "a piece of true information" — became fully established by the 18th century.
Related Words
Synonyms
Antonyms
Common Mistakes
Watch Out For
Due to the fact that it was raining, we stayed indoors.
Because it was raining, we stayed indoors. ("Because" is more concise; "due to the fact that" is wordy and common in learner writing.)
That is not a real fact, that is your opinion.
That is not a fact, that is your opinion. (All facts are real by definition; "real fact" is redundant.)
The facts shows that the programme was successful.
The facts show that the programme was successful. (Subject–verb agreement: plural subject requires plural verb.)