dialectic

From Old French dialectique, from Late Latin dialectica, from Ancient Greek διαλεκτική (dialektikḗ, “the art of argument through interactive questioning and answering”), from διαλεκτικός (dialektikós, “relating to dialogue”), from διαλέγομαι (dialégomai, “to participate in a dialogue”), from διά (diá, “through, across”) + λέγειν (légein, “to speak”).