Obs. rare. [f. prec. + -ER1.] One who makes subtle distinctions or reasons subtly.
1611. Cotgr., Subtiliseur, a subtilizor.
a. 1734. North, Life Ld. Kpr. North (1742), 64. A Slave to Prejudice, a Subtiliser, and Inventor of unheard of Distinctions.