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Definition:(adjective satellite) difficult to accomplish; demanding considerable mental effort and skill; "the ####### work of preparing a dictionary"(adjective satellite) characterized by toilsome effort to the point of exhaustion; especially physical effort; "worked their ####### way up the mining valley"; "a grueling campaign"; "hard labor"; "heavy work"; "heavy going"; "spent many laborious hours on the project"; "set a (adjective satellite) taxing to the utmost; testing powers of endurance; "his final, straining burst of speed"; "a strenuous task"; "your willingness after these six ####### days to remain here"- F.D.Roosevelt
| ** Please Select the best Word that fits the definition in the left column |
