The phrasal verb "stay in" is predominantly used in informal speech, although it can occasionally appear in more formal contexts, especially in written communications discussing lifestyle or social topics. It generally means to remain indoors or within a specific location rather than going out, often used in the context of leisure or routine activities such as "I decided to stay in and watch a movie rather than go out." It is frequently employed in discussions about social plans or personal choices regarding leisure time. The verb "stay" connotes a choice or preference, whereas "in" specifies the setting as indoors or within private space, emphasizing personal comfort or preference for solitude over social activity. This phrasal verb can also imply a voluntary decision to not engage in social activities, highlighting a contrast with more active choices like "go out."
B1
PreIntermediate
1. To remain inside or at home instead of leaving.
I decided to stay in and watch a movie instead of going to the party.
It's been raining all day, so I think I'll stay in with a good book.
2. To choose not to participate in outdoor activities.
Instead of hiking, we stayed in and baked cookies.