Webster’s Revised Unabridged Dictionary · 1913
Conscientious
Con′sci·en′tious (·shĭ·ĕn′shŭs), a. [Cf. F. consciencieux, LL. conscientiosus.] 1. Influenced by conscience; governed by a strict regard to the dictates of conscience, or by the known or supposed rules of right and wrong; — said of a person.
The advice of wise and conscientious men. Prescott.
2. Characterized by a regard to conscience; conformed to the dictates of conscience; — said of actions.
A holy and conscientious course. Abp. Tillotson.
Syn. — Scrupulous; exact; faithful; just; upright.