Tag off is a common phrase used in various contexts, consisting of two words that can be substituted to convey the same meaning. There are several synonyms for this term, each with its own distinct usage. "Tap out" is a synonymous expression frequently used in public transportation systems where passengers use a card or token to indicate the end of their journey. Another synonym for tag off is "check out", typically employed in hotel or rental services, requiring guests to mark their departure. Additionally, "clock out" is used in many workplaces to denote the process of logging off at the end of a shift. These synonyms interchangeably represent the act of officially finishing or ending a particular activity or service.