paradoxist

plural paradoxists

1. datedderogatoryOne who holds incorrect or eccentric beliefs; a bad scientist; a crank.

   This was a noble achievement on the part of our paradoxist. At one stroke it established his theory of the weather, and promised to ensure him text-book immortality as one of the observers of Vulcan.

   1896, Richard Anthony Proctor, Myths and Marvels of Astronomy, page 325

   1 more example

   But these paradoxists and grumblers were a quite infinitesimal minority. The common sense and sound instinct of Britain and of the Empire realised that here was an issue like scarcely another in history — a clear issue of right and wrong[…]

   1916, William Archer, To neutral peace-lovers: a plea for patience, page 16

2. A participant in the art movement of paradoxism.