fallacy error delusion misapprehension misreading falsehood untruth misunderstanding illusion falsity misinterpretation mistake misconstruction misbelief myth misjudgement miscalculation misjudgment hallucination fault misconstruing confusion misimpression incomprehension confounding flaw falseness inaccuracy blunder oversight fallaciousness deception slip boob gaffe sophistry boner sophism bloomer misstep fumble gaff stumble flub howler clanger aberration lapse erroneousness slipup slight solecism goof deviation fail miscue fluff trip screwup absurdity blooper incorrectness misdeed snafu inadvertence wrongness underestimation bungle neglect overestimation misjudging muddle misapplication equivocation casuistry speciousness deceit deceptiveness evasion heresy inconsistency quibbling inexactness faultiness artifice erratum perversion notion prejudice cavil invalidity ambiguity bias elusion preconception quirk subterfuge paradox illogicality fantasy