1 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" [syn: backbreaking, grueling, gruelling, hard, heavy, laborious, punishing, toilsome]
2 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 [syn: straining, strenuous]
3 difficult to accomplish; demanding considerable mental effort and skill; "the arduous work of preparing a dictionary"
needing or using up much energy
hard to climb
Scinax arduous is a species of frog in the Hylidae family. It is endemic to Brazil. Its natural habitat is subtropical or tropical moist lowland forests. It is threatened by habitat loss.
arduous in Catalan: Scinax arduous
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