Arguendo is a Latin term meaning “for the sake of argument” that is commonly used in appeals briefs and other litigation documents. The term indicates that the lawyer’s written or oral statement is made as a matter of argument or illustration only. The statement does not bear directly upon the remainder of the discussion; the lawyer is not admitting the matter, but is merely making a legal argument based on an assumption.
The term is often used in situations where even if one assumed that the facts are as the opposing party contends, the law or other circumstances nevertheless prevent them from prevailing.
“Assuming arguendo that he was aware of the delayed payment, plaintiff is still not liable under the express terms of the agreement.”