If you describe something as ~, you mean that although it seems true or possible, it is in fact false or impossible.
His freedom is ~.
ADJ
If you describe something as ~, you mean that although it seems true or possible, it is in fact false or impossible.
His freedom is ~.
ADJ
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012