If you describe someone as ~, you mean that they do not show much emotion or are not very exciting or interesting.
He glanced furtively at the ~ faces of the two detectives.
ADJ: usu ADJ n
If you describe someone as ~, you mean that they do not show much emotion or are not very exciting or interesting.
He glanced furtively at the ~ faces of the two detectives.
ADJ: usu ADJ n
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012