So-phĭst'ic or So-phĭst'ic-al, a.

adjective

a. [Fr. sophistique, Sp. & It. sofistico, Lat. sophisticus, Gr. σοφιστικός.] Pertaining to a sophist, or embodying sophistry; fallaciously subtile; not sound.

His argument, though ingenious, is altogether sophistical. Macaulay.