In legal terminology, which term means 'against'?

The term that means 'against' in legal terminology is "anti." This prefix is commonly used in various contexts to indicate opposition or resistance to a particular concept, activity, or entity. For instance, in legal and medical contexts, "anti" might be used in terms like "antitrust" (laws against monopolistic practices) or "antiviral" (medications that work against viruses). Its specific use as a prefix establishes a clear sense of opposition or counteraction, making it a widely understood term in both legal language and general discourse.