arduous synonyms

[ US /ˈɑɹdʒuəs/ ]
[ UK /ˈɑːdjuːəs/ ]

Synonyms

Needing much effort to achieve

hard difficult easy serious tall tough uphill laborious

It takes a great or extraordinary physical, mental or spiritual power

trying heavy severe rough demanding formidable rigorous oppressive taxing onerous exacting weighty burdensome effortful backbreaking exigent

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Words Related To arduous

arduous