FALSENESS
insincerity, falseness, hollowness
(noun) the quality of not being open or truthful; deceitful or hypocritical
faithlessness, falseness, fickleness, inconstancy
(noun) unfaithfulness by virtue of being unreliable or treacherous
falsity, falseness
(noun) the state of being false or untrue; “argument could not determine its truth or falsity”
Source: WordNet® 3.1
Etymology
Noun
falseness (countable and uncountable, plural falsenesses)
The characteristic of being false.
Usage notes
• Instances may be quoted in abundance from old authors to show that falseness, falsehood and falsity are often strictly synonymous; but the modern tendency has been decidedly in favor of separating them, falsehood standing for the concrete thing, an intentional lie; falseness, for the quality of being guiltily false or treacherous: as, he is justly despised for his falseness to his oath; and falsity, for the quality of being false without blame: as, the falsity of reasoning. — The Century Dictionary, 1911.
Synonyms
• fabrication
• falsehood, falsity
• fiction
• untruth
• See also falsehood
Source: Wiktionary
False"ness, n.
Definition: 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.
Source: Webster’s Unabridged Dictionary 1913 Edition