"In real time" is a frequently used expression for describing events, actions, or data that are processed or updated instantly as they occur. There are several other synonyms that could be used to convey the same meaning like instantaneous, contemporaneous, up-to-date, online, live, immediate, and synchronously. Instantaneous suggests something occurring in a specific moment, contemporaneous refers to the current time, up-to-date implies that data is current and accurate, while online or live suggests data is being actively transmitted or available at that moment. Immediate describes something happening with no delay and synchronously describes things happening at the same time. These synonyms can be used interchangeably based on context to describe real-time events or actions.