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strenuous

[stren-yoo-uh s] /ˈstrɛn yu əs/
adjective
1.
characterized by vigorous exertion, as action, efforts, life, etc.:
a strenuous afternoon of hunting.
2.
demanding or requiring vigorous exertion; laborious:
To think deeply is a strenuous task.
3.
vigorous, energetic, or zealously active:
a strenuous person; a strenuous intellect.
Origin
1590-1600
1590-1600; < Latin strēnuus; see -ous
Related forms
strenuously, adverb
strenuousness, strenuosity
[stren-yoo-os-i-tee] /ˌstrɛn yuˈɒs ɪ ti/ (Show IPA),
noun
quasi-strenuous, adjective
quasi-strenuously, adverb
superstrenuous, adjective
superstrenuously, adverb
superstrenuousness, noun
unstrenuous, adjective
unstrenuously, adverb
unstrenuousness, noun
Synonyms
3. forceful. See active.
Antonyms
2. easy.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for strenuosity

strenuous

/ˈstrɛnjʊəs/
adjective
1.
requiring or involving the use of great energy or effort
2.
characterized by great activity, effort, or endeavour
Derived Forms
strenuosity (ˌstrɛnjʊˈɒsɪtɪ), strenuousness, noun
strenuously, adverb
Word Origin
C16: from Latin strēnuus brisk, vigorous
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
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Word Origin and History for strenuosity

strenuous

adj.

"characterized by great effort," 1590s, from Latin strenuus "active, vigorous, keen." Probably cognate with Greek strenes, strenos "keen, strong," strenos "arrogance, eager desire," Old English stierne "hard, severe, keen" (see stern (adj.)). Mocked by Ben Jonson as a pedantic neologism in "Poetaster" (1601). Sense of "requiring much energy" is first recorded 1670s. Related: Strenuously; strenuousness.

Online Etymology Dictionary, © 2010 Douglas Harper
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