01 a. Requiring labor, perseverance, or sacrifices; toilsome; tiresome.
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1.
Requiring labor, perseverance, or sacrifices; toilsome; tiresome.“Dost thou love watchings, abstinence, or toil, Laborious virtues all? Learn these from Cato.” — Addison.
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2.
Devoted to labor; diligent; industrious; as, a laborious mechanic.