self-contradictory statement

[self-kən-ˈtrad-ik-ˌtȯr-ē ˈstāt-mənt]
noun phrasepl: self-contradictory statements
declaração autêntica
1. A statement that contains two or more claims that are logically incompatible or mutually exclusive, making the entire statement inherently false or logically impossible
The statement 'This sentence is false' is a self-contradictory statement because if it is true, then it must be false, and if it is false, then it must be true.
A declaração 'Esta sentença é falsa' é uma declaração autêntica porque se ela é verdadeira, então deve ser falsa, e se é falsa, então deve ser verdadeira.
2. A statement in which the predicate negates or opposes the subject, creating a logical paradox
Saying 'I am completely absent' is a self-contradictory statement.
Dizer 'Eu estou completamente ausente' é uma declaração autêntica.
This term is primarily used in academic, philosophical, and logical contexts in both English-speaking countries and Brazil. It is fundamental to logic courses and philosophical debates about truth and meaning. The concept is universally recognized in Western education systems.
Synonyms / Sinônimos
contradictory statementparadoxical statementlogically inconsistent statementoxymoronantinomy
Antonyms / Antônimos
consistent statementlogically coherent statementnon-contradictory statementlogical statement

Regional Variations

General Brazilian
declaração autêntica; afirmação contraditória
Most common usage in academic and logical contexts
São Paulo
declaração contraditória; enunciado paradoxal
Preferred in formal educational settings
Rio de Janeiro
afirmação autêntica; frase contraditória
Commonly used in philosophical discussions
Portugal
declaração contraditória; afirmação paradoxal
Standard usage in Portuguese academic discourse

Related Words

paradoxlogical fallacycontradictioninconsistencytautologyantinomy

Related Idioms & Phrases

have your cake and eat it too - a self-contradictory desire or statement
speak out of both sides of your mouth - making contradictory statements
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