con ‧ sci ‧ en ‧ tious /ˌkɒnʃiˈenʃəs◂ $ ˌkɑːn-/ BrE AmE adjective
[ Date: 1600-1700 ; Language: French ; Origin: conscientieux , from Medieval Latin , from Latin conscientia ; ⇨ ↑ conscience ]
careful to do everything that it is your job or duty to do:
A conscientious teacher may feel inclined to take work home.
a conscientious and hard-working student
—conscientiously adverb
—conscientiousness noun [uncountable] :
his conscientiousness and loyalty to the company