/ Dictionary / Index C conscientious: Meaning and Definition of Find definitions for: con•sci•en•tious Pronunciation: (kon"shē-en'shus, kon"sē-), [key] — adj. controlled by or done according to conscience; scrupulous: a conscientious judge. meticulous; careful; painstaking; particular: conscientious application to the work at hand. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: conscientious (Thesaurus) conscience-stricken conscientious objection Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language