B1
used to give a reason why something is not possible or true
Dictionary examples:
I'd love to be a weather forecaster, except that I can't even predict yesterday's weather. (0.0)
I'd be a great singer, except that my voice scares cats away. (0.0)
I'd be a great superhero, except that I'm afraid of heights and spandex. (0.0)
I want to go, except that I'm tired. (31.3)
She would have passed the exam, except that she was ill on the day. (45.4)