Say It: \-ˈle-mə-sist\
Part of Speech: noun
Definition (as defined by Merriam-Webster): an aggressive controversialist.
Used in a Sentence (aka How I Found It): “In the book, the polemicist and enthusiastic atheist describes the wasting away his body endures during chemotherapy, but his words remain as sharp and carefully chosen as ever.” -“Sickbed successes: 20 great works created by the gravely ill” from The A.V. Club
Origin: Middle French, first used in 1638