rigorous

[ rig-er-uhs ]
/ ˈrɪg ər əs /

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.

QUIZZES

HEED THE VOX POPULI, AND TAKE THIS WORD OF THE DAY QUIZ!

Test your memory on these verbal firecrackers from the week of June 29 to July 5!
Question 1 of 7
anchorite

Origin of rigorous

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

SYNONYMS FOR rigorous

2 demanding, finical.
3 hard, bitter.

OTHER WORDS FROM rigorous

Words nearby rigorous

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for rigorous

British Dictionary definitions for rigorous

rigorous
/ (ˈrɪɡərəs) /

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 forms of rigorous

rigorously, 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