Definition of Proof

1. Noun. Any factual evidence that helps to establish the truth of something. "If you have any proof for what you say, now is the time to produce it"

Exact synonyms: Cogent Evidence
Generic synonyms: Evidence, Grounds
Specialized synonyms: Check, Confirmation, Substantiation, Verification, Establishment, Validation

2. Verb. Make or take a proof of, such as a photographic negative, an etching, or typeset.
Generic synonyms: Create, Make, Produce

3. Adjective. (used in combination or as a suffix) able to withstand. "Childproof locks"
Similar to: Imperviable, Impervious

4. Noun. A formal series of statements showing that if one thing is true something else necessarily follows from it.
Category relationships: Math, Mathematics, Maths, Logic
Specialized synonyms: Mathematical Proof, Logical Proof, Demonstration, Monstrance
Generic synonyms: Argument, Statement

5. Verb. Knead to reach proper lightness. "Proof dough"
Generic synonyms: Knead, Work

6. Noun. A measure of alcoholic strength expressed as an integer twice the percentage of alcohol present (by volume).
Generic synonyms: Amount, Measure, Quantity

7. Verb. Read for errors. "I should proofread my manuscripts"
Exact synonyms: Proofread
Entails: Read
Generic synonyms: Ascertain, Assure, Check, Control, Ensure, Insure, See, See To It
Derivative terms: Proofreader

8. Noun. (printing) an impression made to check for errors.
Exact synonyms: Test Copy, Trial Impression
Generic synonyms: Impression, Printing
Specialized synonyms: Galley Proof, Foundry Proof
Category relationships: Printing, Printing Process

9. Verb. Activate by mixing with water and sometimes sugar or milk. "Proof yeast"
Generic synonyms: Alter, Change, Modify

10. Noun. A trial photographic print from a negative.
Generic synonyms: Photographic Print, Print

11. Verb. Make resistant (to harm). "Proof the materials against shrinking in the dryer"

12. Noun. The act of validating; finding or testing the truth of something.

Definition of Proof

1. n. Any effort, process, or operation designed to establish or discover a fact or truth; an act of testing; a test; a trial.

2. a. Used in proving or testing; as, a proof load, or proof charge.

Definition of Proof

1. Noun. An effort, process, or operation designed to establish or discover a fact or truth; an act of testing; a test; a trial. ¹

2. Noun. The degree of evidence which convinces the mind of any truth or fact, and produces belief; a test by facts or arguments which induce, or tend to induce, certainty of the judgment; conclusive evidence; demonstration. ¹

3. Noun. The quality or state of having been proved or tried; firmness or hardness which resists impression, or doesn't yield to force; impenetrability of physical bodies. ¹

4. Noun. (obsolete) Experience of something. ¹

5. Noun. (uncountable obsolete) Firmness of mind; stability not to be shaken. ¹

6. Noun. (countable printing) A proof sheet; a trial impression, as from type, taken for correction or examination. ¹

7. Noun. (countable logic mathematics) A sequence of statements consisting of axioms, assumptions, statements already demonstrated in another proof, and statements that logically follow from previous statements in the sequence, and which concludes with a statement that is the object of the proof. ¹

8. Noun. (countable mathematics) A process for testing the accuracy of an operation performed. Compare prove, ''transitive verb'', 5. ¹

9. Noun. (obsolete) Armour of excellent or tried quality, and deemed impenetrable; properly, armour of proof. ¹

10. Noun. (American English) A measure of the alcohol content of liquor. Originally, in Britain, 100 '''proof''' was defined as 57.1% by volume (not used anymore). In the US, 100 '''proof''' means that the alcohol content is 50% of the total volume of the liquid, and thus, absolute alcohol would be 200 '''proof'''. ¹

11. Adjective. Used in proving or testing. ¹

12. Adjective. Firm or successful in resisting. ¹

13. Adjective. (context: of alcoholic liquors) Being of a certain standard as to alcohol content. ¹

14. Verb. (transitive intransitive colloquial) To proofread. ¹

15. Verb. (transitive) To make resistant, especially to water. ¹

16. Verb. (transitive) To knead, as in bread dough. ¹

¹ Source:

Definition of Proof

1. to examine for errors [v -ED, -ING, -S]

Lexicographical Neighbors of Proof

pronunciation guide
pronunciation guides
pronunciation respelling
pronunciation respellings
proof (current term)
proof by contradiction
proof by example
proof by exhaustion
proof of concept
proof of technology
proof positive
proof reader

Literary usage of Proof

Below you will find example usage of this term as found in modern and/or classical literature:

1. Kant's Kritik of Judgment by Immanuel Kant (1892)
"Of the kind of belief in a teleological proof of the Being of God The first requisite for every proof, whether it be derived from the immediate empirical ..."

2. Rights of Man: Being an Answer to Mr. Burke's Attack on the French Revolution. by Thomas Paine (1791)
"proof, proof, you exclaim, is What we cY quire, ... fo much the better? and it is proof, proof, that the advocates of ..."

3. Commentaries on the Law of Evidence in Civil Cases by Burr W. Jones, Louis Horwitz (1913)
"it is there insisted that, while the latter shifts from side to side in the progress of a trial according to the nature and strength of the proof offered, ..."

4. Critique of Pure Reason by Immanuel Kant (1901)
"THE IDEAL OF PURE REASON SECTION SIXTH Of the Impossibility of a Physico- Theological proof If, then, neither a pure conception nor the general experience ..."

5. An Essay Concerning the Human Understanding by John Locke (1813)
"That any testimony, the farther off it is from the original truth, the less force and proof it has. The being and existence of the thing itself, ..."

6. Critique of Pure Reason by Immanuel Kant, John Miller Dow Meiklejohn (1899)
"Of the Impossibility of a Physico-Theological proof If, then, neither a pure conception nor the general experience of an existing being can provide a ..."

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