tautologist

noun

1. One who makes tautologies.

   “His is the pseudo-movement, where the doubling simply mimics the routine of a tautologist, of a monologist, and of a Hegelian dialectician.”

   “Nature isn't such a tautologist as to make another to follow him.”

   “When his action is mechanically good he produces a great effect on an uncritical assembly, but he is a tiresome tautologist to the intellectual.”

   “Do you think that God is a tautologist? Let us have faith! Let us say something positive. Irony of itself is the beginning of baseness.”

   “Oh, that damn'd tautologist too!”