tautology

• Nom désignant une affirmation qui est nécessairement vraie par sa forme logique, ou une répétition inutile de la même idée ou phrase en d'autres termes.

A noun referring to a statement that is necessarily true by logical form, or the unnecessary repetition of an idea or phrase using different words.

1. Logical truthC1formal

   A statement that is always true by its logical form, regardless of the truth of its components.

   tautologie

   • In logic, 'A or not A' is a classic tautology.
   • The statement 'either it is raining or it is not raining' is a tautology.
   • Mathematicians often use tautologies to prove other theorems.

   Antonymescontradictionfallacy

2. Useless repetitionB2formal

   The unnecessary and often redundant repetition of an idea, statement, or word.

   tautologie (répétition inutile)

   • Saying 'free gift' is a common tautology.
   • The phrase 'past history' is a tautology because history is always about the past.
   • His speech was full of tautologies, like 'new innovation' and 'added bonus'.

   Synonymespleonasmredundancyreiterationrepetitionwordiness