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Fallacy False From  B Noun  A Idea Fal·La·Cy

Title fallacy
Text
Merriam-Webster's Collegiate Dictionary
fal·la·cy

 \\ˈfa-lə-sē\\ noun 
(plural -cies)
 ETYMOLOGY  Latin fallacia, from fallac-, fallax deceitful, from fallere to deceive
 DATE  14th century
1.
  a. obsolete : 
guile
trickery
  b. deceptive appearance : 
deception
2.
  a. a false or mistaken idea
      popular fallacies
  b. erroneous character : 
erroneousness
3. an often plausible argument using false or invalid inference
English Etymology
fallacy
  late 15c., "deception, false statement," from L. fallacia"deception," from fallax (gen. fallacis) "deceptive," from fallere"deceive." Specific sense in logic dates from 1550s.
Oxford Advanced Learner's Dictionary-牛津双解-OALD7
fallacy
fal·lacy 5fAlEsi / noun(pl. -ies)
1. [C] a false idea that many people believe is true
   谬见;谬论;谬误:
    It is a fallacy to say that the camera never lies.
   说照相机绝不骗人,这是谬见。 
2. [U, C] a false way of thinking about sth
   思维方式谬误;谬误推理:
   He detected the fallacy of her argument. 
   他发觉她论据中的推理谬误。 
 see also pathetic fallacy
OLT
fallacy noun
 illusion
Webster's Third New International Dictionary, Unabridged
fal·la·cy
\ˈfaləsē, -si\ noun
(-es)
Etymology: Latin fallacia, from fallac-, fallax deceitful (from fallere to deceive) + -ia -y — more at 
fail
1. 
 a. obsolete : 
guile
trickery
 b. : deceptive or false appearance : something that misleads the eye or the mind : 
deception
  < it appears that … the descent is perpendicular but this … is a fallacy of the eye caused by the distance — Anthony Trollope >
2. 
 a. : a false or erroneous idea
  < parents console themselves by the American fallacy that one can only be young once — Elizabeth Bowen >
 b. : erroneous or fallacious character : 
erroneousness
  < the fallacy of such a suit for military use should at once be apparent — H.G.Armstrong >
3. : a plausible reasoning that fails to satisfy the conditions of valid argument or correct inference — see formal fallacymaterial fallacyverbal fallacy

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