(n.) The state of being false; contrariety to the fact; inaccuracy; want of integrity or uprightness; double dealing; unfaithfulness; treachery; perfidy; as, the falseness of a report, a drawing, or a singer's notes; the falseness of a man, or of his word.

Machiavellianism Prospero Punic faith Tartuffery Tartuffism aberrancy aberration affectation airiness ambidexterity apostasy appearance artfulness artifice bad faith bamboozlement barratry befooling bluffing breach of faith breach of promise breach of trust calculated deception cant circumvention conning craft cunning deceit deceitfulness deceiving deception deceptiveness defectiveness defrauding delusion delusiveness dereliction desertion deviancy disaffection dishonesty disloyalty distortion double-dealing doubleness doubleness of heart dupery duplicity enmeshment ensnarement entanglement entrapment errancy erroneousness error faithlessness fallaciousness fallacy false appearance false light false piety false show falseheartedness falsehood falsity fault faultiness fickleness flaw flawedness flimflam flimflammery fond illusion fooling furtiveness goody-goodiness guile hallucination hamartia heresy heterodoxy hoodwinking hypocrisy idealization illusion illusionism illusionist illusiveness immateriality improbity inconstancy indirection infidelity insidiousness insincerity kidding low cunning magic magic act magic show magician mala fides mealymouthedness mirage misapplication misconstruction misdoing misfeasance misinterpretation misjudgment mummery oiliness outwitting overreaching peccancy perfidiousness perfidy perversion phantasm pharisaicalness pharisaism pietism pietisticalness piety piousness prestidigitation putting on recreancy religionism religiosity sanctimoniousness sanctimony seeming self-contradiction self-deception self-righteousness semblance shiftiness show simulacrum sin sinfulness sleight of hand sneak attack sneakiness snivel snow job snuffle song and dance sorcerer sorcery specious appearance spoofery spoofing subterfuge surreptitiousness swindling tergiversation treacherousness treachery trickiness tricking trothlessness two-facedness unactuality unction unctuousness underhandedness unfaith unfaithfulness unloyalty unorthodoxy unreality unsteadfastness unsubstantiality untrueness untruth untruthfulness victimization vision wile willful misconception wishful thinking wrong wrongness