law of noncontradiction

noun

The principle that no statement may be simultaneously true and false at the same time and in the same sense.

“The statement "this piece of chalk is not a piece of chalk" violates the law of noncontradiction.”

Similar
law of contradiction
Opposite
dialetheism
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Meanings

noun

alternative law of non-contradiction

  1. human sciencesThe principle that no statement may be simultaneously true and false at the same time and in the same sense.

    The statement "this piece of chalk is not a piece of chalk" violates the law of noncontradiction.

    Synonyms: law of contradiction

Synonyms & antonyms

nounThe principle that no statement may be simultaneously true and false at the same time and in the same sense.

Similar
law of contradiction
Opposite
dialetheism
Also see
law of contradictionprinciple of contradiction

Translations

Japanese 無矛盾律
  • 無矛盾律 (mumujunritsu)principle in logic
Polish zasada niesprzeczności, zasada sprzeczności
  • zasada niesprzecznościprinciple in logic
  • zasada sprzecznościprinciple in logic
Cite this entry
APA

law of noncontradiction. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/law%20of%20noncontradiction

MLA

“law of noncontradiction.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/law%20of%20noncontradiction. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “law of noncontradiction,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/law%20of%20noncontradiction.

Source: law of noncontradiction on Wiktionary, CC BY-SA 4.0.