There are several synonyms for the term "true time." One such term is "actual time," which refers to the exact time that an event occurs. Another synonym for "true time" is "real time," which refers to the time that passes during an event, including any potential delays or interruptions. "Correct time" is another synonym that indicates that the time being measured is accurate and precise. The term "elapsed time" refers to the amount of time that has passed between the start and end of an event. Lastly, the term "exact time" emphasizes the precision and accuracy of the time being measured. All these synonyms serve the same purpose of measuring time accurately and precisely.