The concept of "putting up an argument" involves presenting a logical debate or counterpoint to someone else's position. Antonyms for this phrase include words like "agreeing," "conceding," and "acquiescing," which all suggest that one is accepting the other person's point of view rather than pushing back against it. Other antonyms for this phrase might include terms like "complying," "yielding," or "submitting," all of which imply a degree of acceptance or compliance with the other person's stance rather than actively engaging in debate or disagreement. Ultimately, the ideal approach in any conversation or debate may vary depending on the situation, the participants, and the desired outcome.