Con`sci*en"tious (?), 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.

• thorough, careful, or vigilant
       He was a thoughtful and conscientious worker.