fal·la·cious 
/fəˈleɪʃəs/ adjective
/fəˈleɪʃəs/ adjective [more fallacious; most fallacious] formal : containing a mistake : not true or accurate
▪ a fallacious [=false] set of assumptions ▪ fallacious [=misleading] arguments
▪ a fallacious [=false] set of assumptions ▪ fallacious [=misleading] arguments
— fal·la·cious·ly adverb
— fal·la·cious·ness noun [noncount]
