noun.
A follower of Pyrrho; an adherent of Pyrrhonism; one who doubts everything.
the GNU version of the Collaborative International Dictionary of English
noun.
A follower of Pyrrho; a skeptic.
Word Usage
"Just as the pyrrhonist in maintaining that there is no truth asserts one, so the literary pessimist partly contradicts his contention of the futility of existence by his anxiety to express himself elegantly."