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validity, rigor, rigour, cogency | the quality of being valid and rigorous | ||
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rigor, hardship, severity, severeness, rigour, rigorousness, rigourousness, asperity, grimness | something hard to endure | ||
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severity, severeness, harshness, rigor, rigour, rigorousness, rigourousness, inclemency, hardness, stiffness | excessive sternness |