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arduous
01
ardu, difficile, laborieux
requiring so much effort, mostly physical, that will cause exhaustion
02
ardent, épuisant
taxing to the utmost; testing powers of endurance
03
ardu, difficile, laborieux
requiring vigorous effort, particularly on a continuous basis
arduous
adj
arduously
adv
arduously
adv
arduousness
n
arduousness
n
Exemple
The soldiers endured an arduous march through rough terrain.
The climb up the mountain was an arduous task for the hikers.
Building the house from scratch was an arduous undertaking.
Preparing for the marathon proved to be an arduous training routine.
He found the task of moving all the furniture an arduous chore.
