Not being what it purports to be; false or fake.; (of a line of reasoning) apparently but not actually valid.; (of offspring) illegitimate.
‘separating authentic and spurious claims’
‘Where is the evidence on which the writer bases such spurious claims?’
‘That amendment would penalise drug companies if they lodged spurious patent claims designed to prevent cheap generic drugs entering the market.’
‘Many in the press predicted that the FDA’s actions would open the floodgates to a torrent of spurious claims.’
‘Subsequent investigation revealed that these claims were spurious.’
‘People are entitled to compensation when they are injured, but we need to weed out the spurious claims.’