reversal

noun
1
a change of something so that it is the opposite of what it was
معکوس, برگشت, وارونه, تغییر معکوس
2
a change from being successful to having problems or being defeated
بازگشت, پسرفت
the team’s recent reversal
The company's financial problems were only a temporary reversal.
Industrial unrest and cheaper imports played their part in the company's reversal of fortunes.
3
an exchange of positions or functions between two or more people
تغییر جایگاه, عوض کردن جایگاه, تبادله نقش, تغییر نقش
It’s a complete role reversal/reversal of roles.