If you are ~ in something, you can do it well.
A great number of Egyptians are ~ in foreign languages.
= competent
ADJ: oft ADJ in/at n
If you are ~ in something, you can do it well.
A great number of Egyptians are ~ in foreign languages.
= competent
ADJ: oft ADJ in/at n
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012