What does negation mean?
Negation is the act or method of denying a claim, rejecting an assertion, or expressing something as untrue. It is also a technical term in logic, where it denotes the operation that reverses the truth value of a proposition, and in grammar, where it describes constructions expressing absence or opposition. For example, “not,” “never,” and “without” can all introduce negation. Outside those specialized fields, the word often has a formal or philosophical tone and is more elaborate than a simple “no,” suggesting the deliberate rejection of a particular statement or position. Negation is especially important when evaluating competing claims: a speaker may deny an accusation, contradict an argument, or reverse a proposition through negative wording. Understanding the term also helps distinguish merely being uncertain about a claim from actively asserting that the opposite is true.
nounThe act of denying, rejecting, or stating that something is not the case; an opposite or contrary statement. In logic and grammar, it refers respectively to an operator or construction that reverses the truth value of a proposition or expresses absence.
- The act of denying, rejecting, or contradicting a statement, claim, or condition.
- In logic, an operation or proposition that denies another proposition or reverses its truth value.
- In grammar, a word, construction, or particle that expresses absence, refusal, or opposition.
"His emphatic denial was, in fact, a negation of the accusation rather than a refutation of it."
"The committee issued a formal negation of the allegations."
"The sentence contains an explicit negation through the word “never.”"
Plural “negations” refers to multiple acts, statements, propositions, or grammatical constructions that deny or reverse something.
"The two negations had opposite logical effects."
Negation can turn a simple claim into its opposite—and in logic, one well-placed negation can change the truth of an entire proposition.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does negation come from?
Negation entered English from French négation, which was borrowed from the Latin negationem, a noun formed from negare, “to deny” or “say no.” The Latin root also underlies words such as negative, neglect, negligent, and ignore, reflecting related ideas of denial, refusal, and turning away. English usage developed through legal, philosophical, and grammatical contexts before becoming a standard term in logic and linguistics.
Related word forms
How negation is actually used
In general use, “negation” often sounds formal or technical. It is especially common in logic, linguistics, and discussions of rhetoric or philosophy, where it denotes a systematic denial or reversal rather than merely refusing to agree.
Easily confused with negation
A negative is an adjective or noun indicating absence, opposition, or disapproval, whereas negation is the act or grammatical operation of denying or reversing something.