The word "annunciatory" is often used to describe the act of announcing or indicating something. However, there are a number of synonyms that can be used to express the same idea with a slightly different nuance. These include words like "proclamatory," "declarative," "assertive," "pronunciative," and "missive." Each of these words conveys a sense of authority and confidence in conveying a message or making a statement. They are all useful in different contexts, depending on the tone and emphasis of the announcement being made. Overall, these synonyms offer a range of options for writers and speakers to choose from when communicating important information.