diligence -- (conscientiousness in paying proper attention to a task; giving the degree of care required in a given situation)
diligence, industriousness, industry -- (persevering determination to perform a task; "his diligence won him quick promotions"; "frugality and industry are still regarded as virtues")
application, diligence -- (a diligent effort; "it is a job requiring serious application")
(Sound)
