It is incomprehensible; or, as St. Paul says, the argumentum non apparentium.
It is an 'argumentum ad ignorantiam'—take this explanation or be ignorant.
But this, I suppose, is the argumentum ad gubernatorem—to frighten the governor.
The next time, sir, I will respond with the argumentum baculinum.
You have nobly substituted the argumentum ab humanitate for the argumentum ad hominem, which you so justly condemn.
It was an argumentum ad hominem, and drawn from a popular faith.
It was a masterful bit of hypocritical eloquence, of argumentum ad hominem; but it was made to simple and illiterate hearers.
And much the same may be said for the argumentum ad verecundiam.
argumentum ad misericordiam—An appeal to the mercy of your adversary.
This is an argumentum ad scholam, and pushes too far the demand for consistency.