(n.) The act of contradicting one's self or itself; repugnancy in conceptions or in terms; a proposition consisting of two members, one of which contradicts the other; as, to be and not to be at the same time is a self-contradiction.

aberrancy aberration absurdity ambiguity ambivalence antinomy asymmetry defectiveness delusion deviancy disproportion disproportionateness distortion equivocality equivocation errancy erroneousness error fallaciousness fallacy falseness falsity fault faultiness flaw flawedness hamartia heresy heterodoxy heterogeneity hopelessness illusion impossibility impossible impossibleness incoherence incommensurability incompatibility inconceivability incongruity inconsistency inconsonance irony irreconcilability misapplication misconstruction misdoing misfeasance misinterpretation misjudgment no chance nonconformability nonconformity oxymoron paradox peccancy perversion sin sinfulness the impossible unconformability unconformity unimaginability unorthodoxy unthinkability untrueness untruth untruthfulness what cannot be what cannot happen wrong wrongness