sit back

US /sɪt bæk/
UK /sɪt bæk/
"sit back" picture
1.

to relax in a comfortable position, often by leaning against something

:
After a long day, I just want to sit back and watch TV.
He sat back in his chair and closed his eyes.
2.

to do nothing and allow things to happen without interfering

:
You can't just sit back and watch them make mistakes.
Management decided to sit back and observe the team's progress.