There are several synonyms for the term "convenient indication," which means anything that provides a helpful or useful piece of information. One such synonym is "handy clue." This term suggests that the information provided is both accessible and valuable. Another synonym is "useful sign," which similarly implies that the indication in question is beneficial. A third synonym is "helpful tip," which hints at the idea that the information provided is insider knowledge and can be used to one's advantage. Other possible synonyms include "convenient clue," "valuable guide," and "effective hint." Regardless of the specific term used, all synonyms for "convenient indication" suggest that the information provided is useful and important.