Dictionary.com

rigorous

[ rig-er-uhs ]
/ ˈrɪg ər əs /
Save This Word!
See synonyms for: rigorous / rigorously / rigorousness on Thesaurus.com

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.
QUIZ
ARE YOU A TRUE BLUE CHAMPION OF THESE "BLUE" SYNONYMS?
We could talk until we're blue in the face about this quiz on words for the color "blue," but we think you should take the quiz and find out if you're a whiz at these colorful terms.
Question 1 of 8
Which of the following words describes “sky blue”?
Meet Grammar CoachWrite or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing
Meet Grammar CoachImprove Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help

Origin of rigorous

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

synonym study for rigorous

1. See strict.

OTHER WORDS FROM rigorous

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use rigorous in a sentence

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
FEEDBACK