<p><strong>Noun</strong></p><ul><li>strictness, severity, or harshness, as in dealing with people</li><li>the full or extreme severity of laws, rules, etc.</li><li>severity of living conditions; hardship; austerity: the rigor of wartime existence</li><li>a severe or harsh act, circumstance, etc.</li><li>scrupulous or inflexible accuracy or adherence: the logical rigor of mathematics</li><li>severity of weather or climate or an instance of this: the rigors of winter</li><li>a sudden coldness, as that preceding certain fevers; chill</li><li>a state of rigidity in muscle tissues during which they are unable to respond to stimuli due to the coagulation of muscle protein</li><li>obsolete: stiffness or rigidity</li></ul>