Textual thesaurus for "arduous"

(adj) heavy, grueling, gruelling, hard, laborious, backbreaking, toilsome, operose, punishing

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

(adj) straining, strenuous

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