1. The complete situation, event, or matter in its entirety, including all aspects and details
I was tired of the entire affair and decided to withdraw from the project.
Estava cansado de todo o assunto e decidi me afastar do projeto.
2. A complete romantic or sexual relationship or encounter
The scandal revealed details about their entire affair to the public.
O escândalo revelou ao público detalhes de todo o romance deles.