The antonyms for the word "defending" include attacking, assaulting, damaging, harming, hurting, and injuring. When someone is defending something or someone, they are protecting and safeguarding it from harm or danger. Conversely, when someone is attacking, harming, or damaging something or someone, they are attempting to weaken or destroy it. Sometimes, people engage in defending or attacking behaviors for various reasons, such as to achieve political, social, or personal objectives. However, it is essential to remember that resorting to violence, aggression, or hostility is never constructive or positive and does not lead to sustainable solutions.