1.
alone; without anyone else :
How long were you by yourself in the house?
2.
without help :
Are you sure you did this exercise by yourself?
1.
alone; without anyone else :
How long were you by yourself in the house?
2.
without help :
Are you sure you did this exercise by yourself?
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005