His deceptive reasoning was meant to mislead the audience.
flawed logic
Frequency:
50
%
The flaw in his logic was quickly pointed out by the professor.
clever argument
Frequency:
45
%
She presented a clever argument to support her position.
Idiomatic Expressions for sophism
Phrase: sophism of the day
Meaning: a deceptive or misleading argument that is prevalent or widely accepted at a given time
Usage: The politician's speech was filled with sophisms of the day that were meant to sway public opinion.