arduous

  • (s) 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
    backbreaking, grueling, gruelling, laborious, operose, toilsome, punishing, hard, heavy,
  • (s) 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
    straining, strenuous,
  • (s) difficult to accomplish; demanding considerable mental effort and skill
    • the arduous work of preparing a dictionary

Synonyms

backbreaking grueling gruelling laborious operose toilsome punishing hard heavy straining strenuous

Words of close approximity

arduously arduousness