adjective
[ usually before noun ] a self-imposed task, duty, etc. is one that you force yourself to do rather than one that sb else forces you to do
adjective
[ usually before noun ] a self-imposed task, duty, etc. is one that you force yourself to do rather than one that sb else forces you to do
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005