[dil-i-juhnt]

–adjective

1. constant in effort to accomplish something; attentive and persistent in doing anything: a diligent student.

2. done or pursued with persevering attention; painstaking: a diligent search of the files.

—Related forms

dil·i·gent·ly, adverb

dil·i·gent·ness, noun

A student studies diligently if she pays attention to the teacher, attends class every day, takes good notes in class, and gets good sleep before test days.

diligent means responsible, hardworking, ideal, always attentive, you get the point.

therefore, diligently means showing responsibility in your work.