Soph"ism (?), n. [F. sophisme, L. sophisma, fr. Gr. , fr. to make wise, to be become wise, to play the sophist, fr. wise.]
The doctrine or mode of reasoning practiced by a sophist; hence, any fallacy designed to deceive.
When a false argument puts on the appearance of a true one, then it is properly called a sophism, or "fallacy".
Let us first rid ourselves of sophisms, those of depraved men, and those of heartless philosophers.
© Webster 1913.