If an idea, argument, or reason is ~, it is wrong because it is based on a fallacy. (FORMAL)
Their main argument is ~.
ADJ
If an idea, argument, or reason is ~, it is wrong because it is based on a fallacy. (FORMAL)
Their main argument is ~.
ADJ
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012