arduous

[ ahr-joo-uhs or, especially British, ahr-dyoo- ]
/ ˈɑr dʒu əs or, especially British, ˈɑr dyu- /

adjective

requiring great exertion; laborious; difficult: an arduous undertaking.
requiring or using much energy and vigor; strenuous: making an arduous effort.
hard to climb; steep: an arduous path up the hill.
hard to endure; full of hardships; severe: an arduous winter.

QUIZZES

WHO SAID IT: A QUIZ ON PRESIDENTIAL WIT AND WISDOM

Think you know your presidents? Take this quiz and see if you can match the style, wit, and ideology of these memorable lines to the right POTUS.
Question 1 of 9
“I do believe that the buck stops here, that I cannot rely upon public opinion polls to tell me what is right. I do believe that right makes might and that if I am wrong, 10 angels swearing I was right would make no difference.”

Origin of arduous

1530–40; <Latin arduus erect, steep, laborious; see -ous

OTHER WORDS FROM arduous

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for arduous

British Dictionary definitions for arduous

arduous
/ (ˈɑːdjʊəs) /

adjective

requiring great physical or mental effort; difficult to accomplish; strenuous
hard to endure; harsharduous conditions
hard to overcome or surmount; steep or difficultan arduous track

Derived forms of arduous

arduously, adverbarduousness, noun

Word Origin for arduous

C16: from Latin arduus steep, difficult
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012