affair

US /əˈfer/
UK /əˈfer/
"affair" picture
1.

an event or sequence of events of a specified kind or that has previously been referred to

:
The whole affair was a complete disaster.
It was a strange affair from beginning to end.
2.

a secret sexual relationship between two people, at least one of whom is married to someone else

:
He was having an affair with his secretary.
The scandal involved a politician and his secret affair.