reversal
🇺🇸
/rɪˈvɜːrsl/
🇬🇧
/rɪˈvɜːsl/
A change to the opposite of what something was.
The sudden reversal in weather brought heavy rain after days of sunshine.
A change from success to failure or problems.
The team's unexpected reversal cost them the championship.
An exchange of roles or positions between people.
The role reversal put the student in charge of teaching the class.