The antonyms for "haddest law on" can vary depending on the intended meaning. If the term refers to having strict or severe legal regulations, possible antonyms could include leniency, permissiveness or looseness. On the other hand, if "haddest law on" means having no legal regulations or free reign, antonyms might include order, rules or regulations. Additionally, synonyms for "haddest law on" could be enforced, imposed, or mandated. It's important to consider the context surrounding the term to determine the best antonyms, as well as synonyms, to use in any given situation.