diligence
n. uncountable B2 Upper Intermediate US //ˈdɪɫədʒəns// UK //dˈɪlɪdʒəns// dili·gence
n. steady, careful effort to do a task well. You show diligence when you work hard and pay attention to details over time.
n. persistent and careful application of effort to a task or duty.
Her diligence helped her finish the report early.
The accountant's diligence prevented costly errors in the annual financial audit.
It was not talent alone but a quiet, relentless diligence that allowed the architect to refine the design until every detail was perfect.
Borrowed from French diligence, from Latin diligentia.