Origin
Middle English contradiccioun "objection, opposition, contradiction in logic" borrowed from Anglo-French & Latin; Anglo-French contradiction, borrowed from Latin contrādictiōn-, contrādictiō "act of speaking in opposition, counterargument" (Late Latin also "contradiction in logic," after Greek antíphasis), from contrādic-, variant stem of contrādīcere "to speak against, object to" + -tiōn-, -tiō, suffix of verbal action.