1. (n.) Deceptive or false reasoning\; deceitfulness; that which misleads the eye or the mind; deception.

2. (n.) An argument, or apparent argument, which professes to be decisive of the matter at issue, while in reality it is not; a sophism.

Albigensianism Arianism Catharism Ebionitism Erastianism Gnosticism Jovinianism Lollardy Manichaeanism Manichaeism Monophysism Monophysitism Pelagianism Waldensianism Wyclifism aberrancy aberration antinomianism apparent soundness argument argument by analogy argumentum ad baculum argumentum ad captandum argumentum ad hominem bad case bamboozlement befooling begging the question bluffing calculated deception casuistry circular argument circularity circumvention claptrap conning crowd-pleasing argument deceiving deception deceptiveness defectiveness defrauding delusion delusiveness deviancy disingenuousness distortion dupery elusion emanatism empty words enmeshment ensnarement entanglement entrapment equivocalness equivocation errancy erroneousness error evasion evasive reasoning fallaciousness false doctrine falsehood falseness falsity fault faultiness flaw flawedness flimflam flimflammery fond illusion fooling formal fallacy hallucination hamartia heresy heterodoxy hoodwinking hylotheism hysteron proteron illusion inconsistency insincere argument insincerity inveracity jesuitism jesuitry kidding logical fallacy material fallacy mere rhetoric mirage misapplication misbelief miscalculation misconception misconstruction misdoing misfeasance misinterpretation misjudgment mistake misunderstanding moonshine mystification non sequitur obfuscation obscurantism outwitting overreaching oversubtlety pantheism paralogism peccancy perversion petitio principii phantasm philosophism plausibility plausibleness pseudosyllogism putting on quibble rationalization self-contradiction self-deception sin sinfulness snow job solecism song and dance sophism sophistical reasoning sophistication sophistry special pleading speciosity specious reasoning speciousness spoofery spoofing spuriousness subterfuge subtlety swindling trickiness tricking truthlessness unorthodoxy untrueness untruth untruthfulness verbal fallacy vicious circle vicious reasoning victimization vision weak point willful misconception wishful thinking wrong wrongness