Dil"i*gent (?), a. [F. diligent, L. diligens, -entis, p. pr. 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.
Deut. xix. 18.

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.

Syn. -- Active; assiduous; sedulous; laborious; persevering; attentive; industrious.