Empiric

Part of speech: noun (n.)

1. One who follows an empirical method; one who relies upon practical experience.

2. One who confines himself to applying the results of mere experience or his own observation; especially, in medicine, one who deviates from the rules of science and regular practice; an ignorant and unlicensed pretender; a quack; a charlatan. Among the Greek physicians, those who founded their practice on experience called themselves empirics. Krauth-Fleming. Swallow down opinions as silly people do empirics' pills. Locke.