cat: ardu

Information
has URI	http://lexvo.org/id/term/cat/ardu

Meaning
means	(adjective) difficult to accomplish; demanding considerable mental effort and skill; "the arduous work of preparing a dictionary" arduous
means	(adjective) characterized by 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" laborious, arduous, grueling, backbreaking, heavy, hard, toilsome, punishing, gruelling, operose
means	(adjective) taxing to the utmost; testing powers of endurance; "his final, straining burst of speed"; "a strenuous task"; "your willingness after these six arduous days to remain here"- F.D.Roosevelt arduous, strenuous, straining