The phrase "punch the clock" is a common idiom that means to start or end work at a specific time, typically recorded by a time clock. However, there are several synonyms for this phrase, such as "clock in," "clock out," "begin work," "end work," "report for duty," or "arrive at work." These phrases convey the same meaning as "punch the clock" in different ways, and choosing the appropriate one depends on the context of the situation. Whether it's in a formal or casual setting, using these synonyms can add variety to your language and help you communicate effectively.