( informal ) very early, especially when this is annoying :
The job involved getting up at some unearthly hour to catch the first train.
( informal ) very early, especially when this is annoying :
The job involved getting up at some unearthly hour to catch the first train.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005