( informal ) used to emphasize that you will / would never do sth :
I'd never have thought of that in a million years.
( informal ) used to emphasize that you will / would never do sth :
I'd never have thought of that in a million years.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005