defend against

defend (someone or something) against (someone or something)

1. To protect (someone or something) against a physical attack. We will most certainly defend this castle against any invaders, my liege.2. To argue in favor of someone or something in the face of opposition. How do you plan to defend him against such incriminating evidence?See also: defend

defend someone or something against someone or something

 1. to stand against an attack; to provide a defense against attack. Don't worry, I will defend you against any muggers. We defended ourselves against the attack. The army defended the town against the enemy soldiers. 2. . to advocate the cause of someone or something against someone or something else. The lawyer defended her against the plaintiff. She defended the company against the suit.See also: defend