tautology

[tɔːˈtɒlədʒi]

tautology Definition

  • 1the saying of the same thing twice in different words, usually considered to be a fault of style
  • 2a statement that is true by necessity or by virtue of its logical form

Using tautology: Examples

Take a moment to familiarize yourself with how "tautology" can be used in various situations through the following examples!

  • Example

    The phrase 'a beginner who has just started' is an example of tautology.

  • Example

    The phrase 'free gift' is a tautology because gifts are already free.

  • Example

    The phrase 'I heard it with my own ears' is a tautology because hearing implies using one's ears.

  • Example

    The phrase 'future plans' is a tautology because all plans are made for the future.

tautology Synonyms and Antonyms

Antonyms for tautology

Phrases with tautology

  • a statement that is true by definition, such as 'A is A'

    Example

    The tautology of identity is an example of a statement that is true by necessity.

  • a statement that is true because the consequent is contained in the antecedent, such as 'If A is true, then A or B is true'

    Example

    The tautology of implication is an example of a statement that is true by virtue of its logical form.

  • a statement that is true because the two sides of the equivalence are logically equivalent, such as 'A and B are equivalent if and only if (iff) A implies B and B implies A'

    Example

    The tautology of equivalence is an example of a statement that is true by virtue of its logical form.

Origins of tautology

from Greek 'tauto-', meaning 'the same', and '-logia', meaning 'saying'

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Summary: tautology in Brief

The term 'tautology' [tɔːˈtɒlədʒi] refers to the repetition of the same idea in different words, often considered a stylistic fault. It can also refer to statements that are true by necessity or by virtue of their logical form, such as 'A is A.' Examples of tautology include 'free gift' and 'future plans,' while the tautology of implication and the tautology of equivalence are examples of statements that are true by virtue of their logical form.