The antonym of "de-fenses" is offenses. Offenses refer to actions that violate the law or cause harm to others. While defenses are measures put in place to protect oneself or someone else from harm, offenses are actions that cause harm or damage. Offenses can include crimes such as theft, assault, and fraud, as well as other harmful actions such as lying and betrayal. In contrast, defenses can include things like locks, security systems, and legal protections. It is important to understand the distinction between these two antonyms in order to have a clear understanding of the concepts involved.