English
fallaciousness
From fallacious + -ness.
A compound of fallacious + -ness
Latin fallō ‘to deceive, beguile, trick, cheat, delude,…’
Latin fallāx ‘deceptive, deceitful’
Latin fallācia ‘deception, deceit’
Old French fallacieux
English fallacious
Today it means
noun The property of being fallacious.
Language periods are conventional ranges, not dates for this word.
Etymograph / fallaciousness