"falseness" in the noun sense
1. falsity, falseness
the state of being false or untrue
"argument could not determine its truth or falsity"
2. faithlessness, falseness, fickleness, inconstancy
unfaithfulness by virtue of being unreliable or treacherous
3. insincerity, falseness, hollowness
the quality of not being open or truthful deceitful or hypocritical
Source: WordNet® (An amazing lexical database of English)
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