(comparative more unrigorous, superlative most unrigorous)
un- + rigorous
"unrigorous." YourDictionary, n.d. Web. 10 April 2019. <https://www.yourdictionary.com/unrigorous>.
unrigorous. (n.d.). Retrieved April 10th, 2019, from https://www.yourdictionary.com/unrigorous
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