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Arduous Definition & Meaning - Merriam-Webster
ARDUOUS | English meaning - Cambridge Dictionary
ARDUOUS | definition in the Cambridge English Dictionary
ARDUOUS Synonyms: 106 Similar and Opposite Words - Merriam-Webster
Arduous - Definition, Meaning & Synonyms | Vocabulary.com
ARDUOUS Definition & Meaning | Dictionary.com
arduous adjective - Definition, pictures, pronunciation and usage …
ARDUOUS definition and meaning | Collins English Dictionary
Arduous Definition & Meaning | YourDictionary
Arduous - definition of arduous by The Free Dictionary