rigorous

[rig-er-uhs]

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adjective

characterized by rigor; rigidly severe or harsh, as people, rules, or discipline: rigorous laws.

severely exact or accurate; precise: rigorous research.

(of weather or climate) uncomfortably severe or harsh; extremely inclement.

Logic, Mathematics. logically valid.

Nearby words

Origin of rigorous

First recorded in 1350–1400; Middle English word from Medieval Latin word rigōrōsus. See rigor, -ous

SYNONYMS FOR rigorous

1. stern, austere, hard, inflexible, stiff, unyielding. See strict. 2. demanding, finical. 3. hard, bitter.

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ANTONYMS FOR rigorous

1. flexible, soft. 2. inaccurate. 3. mild.

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Related forms

rig·or·ous·ly, adverbrig·or·ous·ness, nouno·ver·rig·or·ous, adjectiveo·ver·rig·or·ous·ly, adverb

o·ver·rig·or·ous·ness, nounself-rig·or·ous, adjectivesem·i·rig·or·ous, adjectivesem·i·rig·or·ous·ly, adverbsem·i·rig·or·ous·ness, nounun·rig·or·ous, adjectiveun·rig·or·ous·ly, adverbun·rig·or·ous·ness, noun

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for rigorous

But Olds did more than build Nurse-Family Partnership; he did the rigorous evaluation to prove it would work.
Can the U.S. Government Go Moneyball?|Peter Orszag, Jim Nussle|December 23, 2014|DAILY BEAST
Turning the tide of the epidemic, he says, will require “rigorous contact, tracing, and quarantining.”
Blood Is Ebola’s Weapon and Weakness|Abby Haglage|October 26, 2014|DAILY BEAST
Therefore, we can at least infer that the people of Saint-Jean-des-Vignes did not have a rigorous eugenics program like Sparta.
Living With Disability in the Dark Ages|Elizabeth Picciuto|July 22, 2014|DAILY BEAST
And that kind of rigorous attention to detail is not something you can normally do in television.
Vampires without Glitter or Girl Problems: Inside Guillermo del Toro’s ‘The Strain’|Andrew Romano|July 14, 2014|DAILY BEAST

The best performing middle schools place great emphasis on “future-focus”—on rigorous high-school curriculum.
Why Middle School Should Be Abolished|David C. Banks|July 12, 2014|DAILY BEAST
And for which had every Individual been hanged, few I imagine would think that Justice had been rigorous.
A General History of the Pyrates:|Daniel Defoe
They were, besides, made amenable to a most rigorous system of laws, the least infraction of which was punished with death.
The Works of Hubert Howe Bancroft, Volume 5|Hubert Howe Bancroft
These castes were kept apart by a rigorous series of religious taboos.
The New World of Islam|Lothrop Stoddard
But it was difficult to state intelligibly the grounds of this belief to that man of rigorous logic, if of infinite charity.
The Mirror of the Sea|Joseph Conrad
The luxury of them was new to him, yet not unpleasing after many years of rigorous self-denial and poverty.
Bunch Grass|Horace Annesley Vachell

British Dictionary definitions for rigorous

rigorous

adjective

characterized by or proceeding from rigour; harsh, strict, or severerigorous discipline

severely accurate; scrupulousrigorous book-keeping

(esp of weather) extreme or harsh

maths logic (of a proof) making the validity of the successive steps completely explicit

Derived Formsrigorously, adverbrigorousness, 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

Word Origin and History for rigorous

rigorous

adj.

late 14c., from Old French rigorous (13c., Modern French rigoureux), from Medieval Latin rigorosus, from Latin rigor (see rigor). Related: Rigorously.

rigorous

adjective

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Nearby words

Origin of rigorous

Examples from the Web for rigorous

rigorous

adjective

rigorous