(comparative more supertough, superlative most supertough)
super- + tough
"supertough." YourDictionary, n.d. Web. 14 January 2019. <https://www.yourdictionary.com/supertough>.
supertough. (n.d.). Retrieved January 14th, 2019, from https://www.yourdictionary.com/supertough
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