a. [ Cf. LL. controversialis. ] Relating to, or consisting of, controversy; disputatious; polemical;
[ 1913 Webster ]
Whole libraries of controversial books. Macaulay. [ 1913 Webster ]
n. One who carries on a controversy; a disputant. [ 1913 Webster ]
He [ Johnson ] was both intellectually and morally of the stuff of which controversialists are made. Macaulay. [ 1913 Webster ]
adv. In a controversial manner. [ 1913 Webster ]