The phrasal verb "sit back" is more commonly used in informal speech rather than formal contexts. It generally means to relax or to refrain from participating actively, often in situations where one might observe rather than engage, such as watching a show or waiting for an event to unfold. It's frequently used when advising someone to take it easy or to stop worrying about something, for instance, "Sit back and enjoy the movie." Another context includes expressing a passive role in a scenario, like "You can't just sit back and let them do all the work." In formal writing, one might prefer the term "relax" or describe the action more explicitly. The phrase is versatile in nature, pointing to different degrees of inaction depending on the context provided.
B1
PreIntermediate
1. To relax and stop making an effort.
After a long day at work, I like to sit back and watch some TV.
Just sit back and enjoy the ride; there's no need to rush.
2. To not get involved in something actively, often with the connotation of watching events unfold.
He decided to sit back and let his team handle the project for a change.
Politicians can't afford to just sit back and avoid taking action on climate change.