01 a. Prosecuted with careful attention and effort; careful; painstaking; not careless or negligent.
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1.
Prosecuted with careful attention and effort; careful; painstaking; not careless or negligent.“The judges shall make diligent inquisition.” — Deut. xix. 18.
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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.” — Prov. xxii. 29.“Diligent cultivation of elegant literature.” — Prescott.
Syn.
Active; assiduous; sedulous; laborious; persevering; attentive; industrious.