Similar words
duro
Close synonyms for "arduous, hard."
difícil
Close synonyms for "difficult, arduous."
Similar in other languages
Spanish
arduo
arduo is the Spanish word for the same thing — both mean "arduous."
Practice
1 What does árduo mean?
arduous
2 Fill the gap: Foi um trabalho ___.
Full sentence: Foi um trabalho árduo. (It was arduous work.)
3 Which fingerprint chart matches árduo?
árduo: neutral register, academic frequency, general domain, neutral connotation.