Realtime is a term used to describe a process or data that happens instantly. However, there are a number of synonyms that can be used interchangeably with realtime, such as live, actual, current, immediate, instant, and prompt. These synonyms convey the same sense of immediacy, and are often used in contexts related to real-time communication, such as video conferencing, online gaming, and social media. Other synonyms for realtime include instantaneous, on-the-spot, and up-to-the-minute, all of which convey the same sense of urgency and immediacy. Overall, the use of synonyms for the word realtime can help convey the urgency and importance of time-sensitive information in a variety of contexts.