"Have off" is a commonly used phrase that usually refers to taking some time off work or school. However, there are various synonyms that can be used to convey the same idea. "Take a break" is one such phrase that is widely used to mean taking some time off from work or studies. "Take a day off" is another commonly used phrase that means taking a day for relaxation or rest from work. "Take time out" and "take some personal time" are other expressions that can be used interchangeably with "have off". "Enjoy some free time" or "take a vacation" can also be effective synonyms for "have off".