watching sth but not actually involved in it :
He was content to watch from the sidelines as his wife built up a successful business empire.
watching sth but not actually involved in it :
He was content to watch from the sidelines as his wife built up a successful business empire.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005