If you say that someone gets up to something, you mean that they do it and you do not approve of it. (BRIT mainly SPOKEN)
They ~ all sorts behind your back.
PHRASAL VERB: V P P n disapproval
If you say that someone gets up to something, you mean that they do it and you do not approve of it. (BRIT mainly SPOKEN)
They ~ all sorts behind your back.
PHRASAL VERB: V P P n disapproval
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012