Webster's Revised Unabridged Dictionary · 1913

Industrious

Industrious , adjective

[Latin industrius, industriosus: compare French industrieux. See Industry.]

1.
Given to industry; characterized by diligence; constantly, regularly, or habitually occupied; busy; assiduous; not slothful or idle; -- commonly implying devotion to lawful and useful labor.
Frugal and industrious men are commonly friendly to the established government. — Sir W. Temple
2.
Steadily and perseveringly active in a particular pursuit or aim; as, he was negligent in business, but industrious in pleasure; an industrious mischief maker.
Industrious to seek out the truth of all things. — Spenser