I am preparing myself to argue against the case.
•Liz argued against Tom as the new president, but we chose him anyway.
2. Fig. [for something, such as facts] to support a case against someone or something in an argument; [for something, such as facts] to support a case against the choice of someone or something in an argument. •I have uncovered something that argues against continuing this friendship.
•His own remarks argue against his qualifications for the office, but he probably will be elected anyway.