Entry 2 senses · 2 variants Webster, 1913 Unperfect · Un·per·fect · IPA /ʌnˈpɜː(ɹ)fɪkt/ v. t. a. 01 v. t. To mar or destroy the perfection of. 1. To mar or destroy the perfection of.[Obs.] 02 a. Imperfect. 1. Imperfect.[Obs.]