adj. 1. Brought into final form; completely formed; -- of plans, ideas, etc. [ WordNet 1.5 ]
2. Refined to a state of excellence; -- of e.g. skills or the products of skills. Syn. -- finished. [ WordNet 1.5 ]
n. One who, or that which, makes perfect. “The . . . perfecter of our faith.” Barrow. [ 1913 Webster ]