become strict, regulate, suppress, clamp down; see punish, restrain 1, suppress.
"crack-down-on." YourDictionary, n.d. Web. 16 September 2018. <http://thesaurus.yourdictionary.com/crack-down-on>.
crack-down-on. (n.d.). Retrieved September 16th, 2018, from http://thesaurus.yourdictionary.com/crack-down-on
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