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tautology
used in a sentence

2 meanings
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1  
a linguistic tautology
Definition useless repetition in different words (such as "unmarried bachelor")
  • It is an intentional tautology as when Gertrude Stein said "A rose is a rose is a rose."
tautology = useless repetition in different words (such as "unmarried bachelor")
  • That's not exactly a tautology, but it is funny.
    Sherman Alexie  --  The Absolutely True Diary of a Part-Time Indian
tautology = useless repetition in different words (such as "unmarried bachelor")

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2  
a logical tautology
Definition a statement that is necessarily true (such as "She will win the election or she won't.")
  • She didn't proved anything. It's a tautology to propose as a premise that "All men are pigs," and that "Bob is therefore a pig because he's a man." The "proof" is in the premise—which is to say, there is no proof.
tautology = a statement that is necessarily true (such as "She will win the election or she won't.")
Other Uses (with this meaning)
  • As a logical proposition, that paragraph can be reduced to the following: Because A, therefore A—the sort of tautology that would get any high school student a failing grade.
    Michael Elliott  --  Time Inc., "How to Lose Friends and Alienate People" (Dec. 22, 2003)  --  http://www.time.com/time/printout/0,8816,1006489,00.html (retrieved 09/24/08)
  • ...the definition of 'self-interest' as the pursuit of the fulfillment of preferences is a tautology.
    Sam Vaknin  --  Economics - Psychology's Neglected Branch  --  http://www.thefreelibrary.com/Economics+-+Psychology's+Neglected+Branch-a01073747047 (retrieved 09/24/08)

Dictionary / pronunciation — Vocabulary.com®Dictionary / synonyms — Google®Dictionary list — Onelook.com®Wikipedia Article
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