CONSCIENTIOUS
conscientious, painstaking, scrupulous
(adjective) characterized by extreme care and great effort; “conscientious application to the work at hand”; “painstaking research”; “scrupulous attention to details”
conscientious
(adjective) guided by or in accordance with conscience or sense of right and wrong; “a conscientious decision to speak out about injustice”
Source: WordNet® 3.1
Etymology
Adjective
conscientious (comparative more conscientious, superlative most conscientious)
Thorough, careful, or vigilant in one’s task performance.
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).
Antonyms
• capricious
• impulsive
Source: Wiktionary
Con`sci*en"tious, a. Etym: [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.
Source: Webster’s Unabridged Dictionary 1913 Edition