arduousness

arduous

[ahr-joo-uhs or, esp. British, ahr-dyoo-]
adjective
1.
requiring great exertion; laborious; difficult: an arduous undertaking.
2.
requiring or using much energy and vigor; strenuous: making an arduous effort.
3.
hard to climb; steep: an arduous path up the hill.
4.
hard to endure; full of hardships; severe: an arduous winter.

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

arduously, adverb
arduousness, noun
superarduous, adjective
superarduously, adverb
superarduousness, noun
unarduous, adjective
unarduously, adverb
unarduousness, noun


1. hard, toilsome, onerous, wearisome, burdensome, exhausting.


1. easy.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
arduous (ˈɑːdjʊəs)
 
adj
1.  requiring great physical or mental effort; difficult to accomplish; strenuous
2.  hard to endure; harsh: arduous conditions
3.  hard to overcome or surmount; steep or difficult: an arduous track
 
[C16: from Latin arduus steep, difficult]
 
'arduously
 
adv
 
'arduousness
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

arduous
1530s, "high, steep, difficult to climb," from L. arduus "high, steep," from PIE base *eredh- "to grow, high" (see ortho-). Metaphoric extension to "difficult" first attested 1713.
Online Etymology Dictionary, © 2010 Douglas Harper
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