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