( informal ) to be capable of doing sth :
Everyone thinks he has it in him to produce a literary classic.
You were great. I didn't know you had it in you.
( informal ) to be capable of doing sth :
Everyone thinks he has it in him to produce a literary classic.
You were great. I didn't know you had it in you.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005