(in a way that is) too great, difficult, etc. to be believed :
Dissatisfaction with the government has grown beyond belief.
icy air that was cold beyond belief
(in a way that is) too great, difficult, etc. to be believed :
Dissatisfaction with the government has grown beyond belief.
icy air that was cold beyond belief
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005