ETYM Latin industrius, industriosus: cf. French industrieux. Related to Industry.
1. Given to industry; characterized by diligence; constantly, regularly, or habitually occupied; busy; assiduous; not lazy or idle; -- commonly implying devotion to lawful and useful labor.
2. Steadily and perseveringly active in a particular pursuit or aim.
ETYM Latin laboriosus,fr. labor labor: cf. French laborieux.
1. Requiring labor, perseverance, or sacrifices.
2. Toilsome; tiresome.
In a plodding manner.