A personal day is a day off work that is taken for personal reasons. It is also known as a leave day or a day of leave. Other synonyms for a personal day include a mental health day, a self-care day, or a rest day. Some may also refer to it as a vacation day or a time-off day, although these terms may be used more broadly to include holidays and other types of time off. Ultimately, the specific term used depends on the context and the purpose of the time off, but the common thread among these synonyms is that they all refer to taking time away from work for personal reasons.