Ordinary, monotonous routine; that which is usual or mundane.

“People come here to escape the day-to-day.”

Ordinary or mundane.

“One has to deal with the day-to-day chores.”

Happening every day.

“I would like to know about the day-to-day workings of the business.”

Subject to daily redetermination.

“He has an ankle sprain and his status is day-to-day.”

On a daily basis.

“The cost of gasoline is determined day-to-day.”