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rigorous

[rig-er-uh s] /ˈrɪg ər əs/
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.
Origin
1350-1400
1350-1400; Middle English < Medieval Latin rigōrōsus. See rigor, -ous
Related forms
rigorously, adverb
rigorousness, noun
overrigorous, adjective
overrigorously, adverb
overrigorousness, noun
self-rigorous, adjective
semirigorous, adjective
semirigorously, adverb
semirigorousness, noun
unrigorous, adjective
unrigorously, adverb
unrigorousness, noun
Synonyms
1. stern, austere, hard, inflexible, stiff, unyielding. See strict. 2. demanding, finical. 3. hard, bitter.
Antonyms
1. flexible, soft. 2. inaccurate. 3. mild.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for over rigorous

rigorous

/ˈrɪɡərəs/
adjective
1.
characterized by or proceeding from rigour; harsh, strict, or severe rigorous discipline
2.
severely accurate; scrupulous rigorous book-keeping
3.
(esp of weather) extreme or harsh
4.
(maths, logic) (of a proof) making the validity of the successive steps completely explicit
Derived Forms
rigorously, adverb
rigorousness, noun
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 over rigorous
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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