adjective

wishing to do one’s work or duty well and thoroughly.

a conscientious man, he took his duties very seriously

diligent,industrious,punctilious,painstaking,sedulous,assiduous,dedicated,careful,meticulous,thorough,attentive,laborious,hard-working,ultra-careful,persevering,unflagging,searching,close,minute,accurate,correct,studious,rigorous,particular,religious,strict