arduous

Definition

Needing or using up much energy; testing powers of endurance.

Etymology

From Latin arduus (“lofty, high, steep, hard to reach, difficult, laborious”), akin to Irish ard (“high”).

Example Sentences

• "The movement towards a peaceful settlement has been a long and arduous political struggle."
• "Chelsea survived and can now turn their attentions to the Champions League final against Bayern Munich in Germany later this month as they face an increasingly arduous task to finish in the Premier League's top four."
• "1805-1814, Dante, Henry Francis Cary (translator), The Divine Comedy Where flames the arduous Spirit of Isidore."