Fallacy definition:
fal·la·cy
/ˈfaləsē/
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noun
a mistaken belief, especially one based on unsound argument.
"the notion that the camera never lies is a fallacy"
Similar:
misconception
mistaken belief
misbelief
delusion
false notion
mistaken impression
misapprehension
misjudgment
miscalculation
misinterpretation
misconstruction
error
mistake
untruth
inconsistency
illusion
myth
fantasy
deceit
deception
sophism
sophistry
casuistry
faulty reasoning
unsound argument
LOGIC
a failure in reasoning which renders an argument invalid.
"Kraft exposes three fallacies in this approach"
faulty reasoning; misleading or unsound argument.
"the potential for fallacy which lies behind the notion of self-esteem"