If you say that an old person is in their second childhood , you mean that their mind is becoming weaker and that their behaviour is similar to that of a young child.
N-SING
If you say that an old person is in their second childhood , you mean that their mind is becoming weaker and that their behaviour is similar to that of a young child.
N-SING
Collins COBUILD Advanced Learner's English Dictionary. Английский словарь Коллинз COBUILD для изучающих язык на продвинутом уровне. 2006