What term describes something that occurs all the time?

The term that describes something occurring all the time is "constantly." This word conveys a sense of uninterrupted continuity, suggesting that the event or condition happens without any breaks or exceptions. It is often used to emphasize a state of persistence and reliability, indicating that the phenomenon remains unchanged throughout a given period.

While other terms like "frequently," "occasionally," and "routinely" describe different frequencies of occurrence, they do not capture the idea of something happening continuously or at every moment. "Frequently" suggests that something happens regularly but not necessarily all the time. "Occasionally" implies infrequent occurrences, while "routinely" indicates activities that happen regularly but still may have gaps between them. Therefore, "constantly" is the most accurate term to describe something that happens all the time.