Source : Webster's Revised Unabridged Dictionary (1913)

Unperfect \Un*per"fect\, v. t. [1st pref. un- + perfect.]
   To mar or destroy the perfection of. [Obs.] --Sir P. Sidney.

Unperfect \Un*per"fect\, a. [Pref. un- + perfect.]
   Imperfect. [Obs.] --Holland. -- {Un*per"fect*ly}, adv. [Obs.]
   --Hales. -- {Un*per"fect*ness}, n. [Obs.]