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adjective
1.
characterized by rigor; rigidly severe or harsh, as people, rules, or discipline: rigorous laws.
2.
severely exact or accurate; precise: rigorous research.
3.
(of weather or climate) uncomfortably severe or harsh; extremely inclement.
4.
Logic, Mathematics. logically valid.
Related forms
rig·or·ous·ly, adverb
rig·or·ous·ness, noun
o·ver·rig·or·ous, adjective
o·ver·rig·or·ous·ly, adverb
o·ver·rig·or·ous·ness, noun
EXPANDself-rig·or·ous, adjective
sem·i·rig·or·ous, adjective
sem·i·rig·or·ous·ly, adverb
sem·i·rig·or·ous·ness, noun
un·rig·or·ous, adjective
un·rig·or·ous·ly, adverb
un·rig·or·ous·ness, noun
COLLAPSESynonyms
1. stern, austere, hard, inflexible, stiff, unyielding. See strict. 2. demanding, finical. 3. hard, bitter.
1. stern, austere, hard, inflexible, stiff, unyielding. See strict. 2. demanding, finical. 3. hard, bitter.
Antonyms
1. flexible, soft. 2. inaccurate. 3. mild.
1. flexible, soft. 2. inaccurate. 3. mild.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Rigorousness
is always a great word to know.
So is flibbertigibbet. Does it mean:
| a chattering or flighty, light-headed person. |
| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
Collins
World English Dictionary
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Etymonline
Word Origin & History
rigorous
late 14c., from O.Fr. rigorous (Mod.Fr. rigoureux), from M.L. rigorosus, from L. rigor (see rigor).
Online Etymology Dictionary, © 2010 Douglas Harper
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