/ sust; NAmE / adjective
( BrE , informal ) knowing what you need to know about the situations and people around you, so that you are not easily tricked and are able to take care of yourself
/ sust; NAmE / adjective
( BrE , informal ) knowing what you need to know about the situations and people around you, so that you are not easily tricked and are able to take care of yourself
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005