Laborious
Pronunciation : La*bo"ri*ous
Part of Speech : a.
Etymology : [L. laboriosus,fr. labor labor: cf. F. laborieux.]
Definition : 1. Requiring labor, perseverance, or sacrifices; toilsome; tiresome. Dost thou love watchings, abstinence, or toil, Laborious virtues all Learn these from Cato. Addison.
2. Devoted to labor; diligent; industrious; as, a laborious mechanic. -- La*bo"ri*ous*ly, adv. -- La*bo"ri*ous*ness, n.
Source : Webster's Unabridged Dictionary, 1913