Diligent
Diligent , adjective
[French diligent, Latin diligens, -entis, present participle of diligere, dilectum, to esteem highly, prefer; di- = dis- + legere to choose. See Legend.]
1.
Prosecuted with careful attention and effort; careful; painstaking; not careless or negligent.
The judges shall make diligent inquisition.
2.
Interestedly and perseveringly attentive; steady and earnest in application to a subject or pursuit; assiduous; industrious.
Seest thou a man diligent in his business? he shall stand before kings.
Diligent cultivation of elegant literature.