What Is The Difference Between “Day Off” And “Off Day”? “Day off” means we are not working or doing something in the present day. It typically applies when we have booked a “day off” at work and we do not go in. “Off day” means we are not performing well for a day or not up to our usual standard. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.