conscientious — English Dictionary

Adjective

1. Thorough, careful, or vigilant in one’s task performance; painstaking.

   Examples

   He was a thoughtful and conscientious worker.

2. Influenced by conscience; principled; 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).

   Synonyms

   faithful

   Examples

   The advice of wise and conscientious people.

Adjective

1. characterized by extreme care and great effort

   Synonyms

   painstakingscrupulous

   Examples

   conscientious application to the work at hand

   painstaking research

   More examples (1)

   scrupulous attention to details

2. guided by or in accordance with conscience or sense of right and wrong

   Antonyms

   unconscientious

   Examples

   a conscientious decision to speak out about injustice