Entry 2 senses · 2 variants Webster, 1913 Perficient · Per·fi·cient · IPA /pə(ɹ)ˈfɪʃənt/ a. n. 01 a. Making or doing thoroughly; efficient; effectual. 1. Making or doing thoroughly; efficient; effectual.[R.] 02 n. One who performs or perfects a work; especially, one who endows a charity. 1. One who performs or perfects a work; especially, one who endows a charity.[R.]