B1
the most unpleasant or difficult thing, person, or situation
Dictionary examples:
The worst was explaining to my boss why I was wearing pajamas to work. (0.0)
The worst was when my pants fell down during my important presentation. (0.0)
The worst was when I accidentally called my teacher 'Mom' in class. (0.0)
That was the worst I've seen him play in several years. (13.5)