Truth is most often used to mean being in accord with fact or reality, or fidelity to an original or standard. Truth may also often be used in modern contexts to refer to an idea of "truth to self," or authenticity.
Truth is usually held to be opposite to falsehood, which, correspondingly, can also take on a logical, factual, or ethical meaning. The concept of truth is discussed and debated in several contexts, including philosophy, art, and religion. Many human activities depend upon the concept, where its nature as a concept is assumed rather than being a subject of discussion; these include most of the sciences, law, journalism, and everyday life. Some philosophers view the concept of truth as basic, and unable to be explained in any terms that are more easily understood than the concept of truth itself. Commonly, truth is viewed as the correspondence of language or thought to an independent reality, in what is sometimes called the correspondence theory of truth.
Other philosophers take this common meaning to be secondary and derivative. According to Martin Heidegger, the original meaning and essence of truth in Ancient Greece was unconcealment, or the revealing or bringing of what was previously hidden into the open, as indicated by the original Greek term for truth, aletheia. On this view, the conception of truth as correctness is a later derivation from the concept's original essence, a development Heidegger traces to the Latin term veritas.
Pragmatists like C. S. Peirce take truth to have some manner of essential relation to human practices for inquiring into and discovering truth, with Peirce himself holding that truth is what human inquiry would find out on a matter, if our practice of inquiry were taken as far as it could profitably go: "The opinion which is fated to be ultimately agreed to by all who investigate, is what we mean by the truth..."
Various theories and views of truth continue to be debated among scholars, philosophers, and theologians. Language and words are a means by which humans convey information to one another and the method used to determine what is a "truth" is termed a criterion of truth. There are differing claims on such questions as what constitutes truth: what things are truthbearers capable of being true or false; how to define, identify, and distinguish truth; the roles that faith-based and empirically based knowledge play; and whether truth is subjective or objective, relative or absolute.
Friedrich Nietzsche famously suggested that an ancient, metaphysical belief in the divinity of Truth lies at the heart of and has served as the foundation for the entire subsequent Western intellectual tradition: "But you will have gathered what I am getting at, namely, that it is still a metaphysical faith on which our faith in science rests—that even we knowers of today, we godless anti-metaphysicians still take our fire too, from the flame lit by the thousand-year old faith, the Christian faith which was also Plato's faith, that God is Truth; that Truth is 'Divine'..."
True facts, genuine depiction or statements of reality.
"The truth is that our leaders knew a lot more than they were letting on."
Conformity to fact or reality; correctness, accuracy.
"There was some truth in his statement that he had no other choice."
The state or quality of being true to someone or something.
"Truth to one's own feelings is all-important in life."
A pledge of loyalty or faith.
Conformity to rule; exactness; close correspondence with an example, mood, model, etc.
That which is real, in a deeper sense; spiritual or ‘genuine’ reality.
"The truth is what is."
"Alcoholism and redemption led me finally to truth."
Something acknowledged to be true; a true statement or axiom.
"Hunger and jealousy are just eternal truths of human existence."
Topness. (See also truth quark.)
To assert as true; to declare; to speak truthfully.
To make exact; to correct for inaccuracy.
To tell the truth.
Conforming to the actual state of reality or fact; factually correct.
"This is a true story."
Conforming to a rule or pattern; exact; accurate.
"a true copy;"
"a true likeness of the original"
Of the state in Boolean logic that indicates an affirmative or positive result.
""A and B" is true if and only if "A" is true and "B" is true."
"He’s turned out to be a true friend."
"This is true Parmesan cheese."
"The true king has returned!"
etc.}} Accurate; following a path toward the target.
Fair, unbiased, not loaded.
"this gun shoots true"
The state of being in alignment.
A pledge or truce.
"He trued the spokes of the bicycle wheel."
To make even, level, symmetrical, or accurate, align; adjust.
"We spent all night truing up the report."
The quality or being true; as: - (a) Conformity to fact or reality; exact accordance with that which is, or has been; or shall be.
Conformity to rule; exactness; close correspondence with an example, mood, object of imitation, or the like.
That which is true or certain concerning any matter or subject, or generally on all subjects; real state of things; fact; verity; reality.
Fidelity; constancy; steadfastness; faithfulness.
A true thing; a verified fact; a true statement or proposition; an established principle, fixed law, or the like; as, the great truths of morals.
The practice of speaking what is true; freedom from falsehood; veracity.
Righteousness; true religion.
To assert as true; to declare.
Conformable to fact; in accordance with the actual state of things; correct; not false, erroneous, inaccurate, or the like; as, a true relation or narration; a true history; a declaration is true when it states the facts.
Right to precision; conformable to a rule or pattern; exact; accurate; as, a true copy; a true likeness of the original.
Steady in adhering to friends, to promises, to a prince, or the like; unwavering; faithful; loyal; not false, fickle, or perfidious; as, a true friend; a wife true to her husband; an officer true to his charge.
Actual; not counterfeit, adulterated, or pretended; genuine; pure; real; as, true balsam; true love of country; a true Christian.
Genuine; real; not deviating from the essential characters of a class; as, a lizard is a true reptile; a whale is a true, but not a typical, mammal.
In accordance with truth; truly.
a fact that has been verified;
"at last he knew the truth"
"the truth is the he didn't want to do it"
conformity to reality or actuality;
"they debated the truth of the proposition"
"the situation brought home to us the blunt truth of the military threat"
"he was famous for the truth of his portraits"
"he turned to religion in his search for eternal verities"
a true statement;
"he told the truth"
"he thought of answering with the truth but he knew they wouldn't believe it"
the quality of nearness to the truth or the true value;
"he was beginning to doubt the accuracy of his compass"
"the lawyer questioned the truth of my account"
United States abolitionist and feminist who was freed from slavery and became a leading advocate of the abolition of slavery and for the rights of women (1797-1883)
proper alignment; the property possessed by something that is in correct or proper alignment;
"out of true"
make level, square, balanced, or concentric;
"true up the cylinder of an engine"
consistent with fact or reality; not false;
"the story is true"
"it is undesirable to believe a proposition when there is no ground whatever for supposing it true"
"the true meaning of the statement"
not synthetic or spurious; of real or natural origin;
conforming to definitive criteria;
"the horseshoe crab is not a true crab"
"Pythagoras was the first true mathematician"
accurately placed or thrown;
"his aim was true"
"he was dead on target"
devoted (sometimes fanatically) to a cause or concept or truth;
"true believers bonded together against all who disagreed with them"
expressing or given to expressing the truth;
"a true statement"
"gave truthful testimony"
"a truthful person"
worthy of being depended on;
"a dependable worker"
"an honest working stiff"
"a reliable source of information"
"he was true to his word"
"I would be true for there are those who trust me"
not pretended; sincerely felt or expressed;
"her interest in people was unfeigned"
rightly so called;
"a spirit which true men have always admired"
"a true friend"
determined with reference to the earth's axis rather than the magnetic poles;
"true north is geographic north"
having a legally established claim;
"the legitimate heir"
"the true and lawful king"
in tune; accurate in pitch;
"a true note"
accurately fitted; level;
"the window frame isn't quite true"
reliable as a basis for action;
"a true prophesy"
"true, she is the smartest in her class"