On-stream is often used in the context of streaming media or other forms of online content. Some useful synonyms for on-stream might include live, streaming, broadcasting, airing, webcasting, or podcasting. These terms all refer to the production and distribution of live or recorded content over the internet or other digital channels. Other related terms might include online, digital, or virtual, which all convey the idea of something existing or happening within the realm of technology or the internet. By using these synonyms, writers and speakers can create more variety in their language and communicate their ideas more effectively to their audience.