The term "clocking in" refers to the process of recording one's arrival time at work. The opposite of clocking in would be clocking out, which refers to the process of recording one's departure time from work. Other antonyms for "clocking in" could include: arriving late, coming in early, punching out, and checking out. These antonyms highlight the various ways in which time can be recorded and measured within the context of work. While clocking in is often seen as a routine part of the workday, it is important to remember that there are many different ways to approach time management and work schedules.