The word "instates" means to establish or bring into effect, often in a formal setting. There are several synonyms for this term, including implement, enforce, inaugurate and initiate. These words all refer to the act of putting something in place and making it official. Other synonyms for instates include install, introduce, set up and establish. Each of these words conveys the idea of starting something new or making something official. Whether you are writing a paper, giving a speech or simply trying to expand your vocabulary, knowing these synonyms can help you express yourself more clearly and effectively.