1.
to no longer have any contact with sb/sth :
I've lost touch with all my old friends.
2.
to no longer understand sth, especially how ordinary people feel
1.
to no longer have any contact with sb/sth :
I've lost touch with all my old friends.
2.
to no longer understand sth, especially how ordinary people feel
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005