Definitions for "Laborious"
Requiring labor, perseverance, or sacrifices; toilsome; tiresome.
characterized by toilsome effort to the point of exhaustion; especially physical effort; "worked their arduous way up the mining valley"; "a grueling campaign"; "hard labor"; "heavy work"; "heavy going"; "spent many laborious hours on the project"; "set a punishing pace"
Devoted to labor; diligent; industrious; as, a laborious mechanic.