We use this expression to talk about something that is repetitive and probably negative or boring.
You can use this phrase in ………… language.
Spoken
Written
Informal
Example 1
A: How are you getting on with your job?
B: Not so great. The same routine day in, day out. It’s really dull.
Example 2
A: I could never work in a factory.
B: Me neither. I couldn’t do a job where everything’s the same day in, day out.
