PERFICIENT
Noun
perficient (plural perficients)
One who performs or perfects a work.
One who endows a charity.
Adjective
perficient (comparative more perficient, superlative most perficient)
Making or doing throughly; efficient; effectual.
Source: Wiktionary
Per*fi"cient, a. Etym: [L. perficiens, p.pr. of perficere to perform.
See Perfect.]
Definition: Making or doing throughly; efficient; effectual. [R.]
Blackstone.
Per*fi"cient, n.
Definition: One who performs or perfects a work; especially, one who endows
a charity. [R.]
Source: Webster’s Unabridged Dictionary 1913 Edition