The phrase "wert sign of" essentially means "indication of." There are several synonyms for this phrase that can be used to convey the same meaning, including "clue," "hint," "signal," "evidence," "mark," and "trace." These words all suggest that something is pointing to a larger idea or concept. For example, a clue could indicate the presence of a suspect in a crime investigation, while a signal could indicate a change in the stock market. These synonyms help individuals to understand the deeper meaning behind a particular sign or signal, and can be used in a variety of contexts.