Definition of "set back" in English

Verb

To delay or obstruct.
- I expect it will set us back by a day or so, but I think a side trip will be worthwhile.
- Having the mindset that you "can't" reach your goals is only going to set you back.
To remove from or allow distance.
- Set it back from the road by twenty or thirty feet.
To install or position behind a boundary or surface, or in a recess.
- The statue was set back in a niche.
To cost money.
- How much do you suppose that fancy dress set her back?
To reverse, go backwards.