conscientiousness conscientiously • conscionable · · · Info · Definitions · Synonyms · Antonyms · Characters · · conscientiousness · · Text Latin · · Script 17 · · Length Definitions · · · (noun) the quality of being in accord with the dictates of conscience. · · Noun Definition 1 (noun) the trait of being painstaking and careful. Synonyms: painstakingness. · · Noun Definition 2 Synonyms · · · painstakingness · · Synonym 1 Antonyms · · · unconscientiousness · · Antonym 0 Characters · · c latin small letter c U+0063 e latin small letter e U+0065 i latin small letter i U+0069 n latin small letter n U+006E o latin small letter o U+006F s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075