One who is obnoxiously self-assertive and arrogant:
"know-it-all." YourDictionary, n.d. Web. 11 October 2018. <http://thesaurus.yourdictionary.com/know-it-all>.
know-it-all. (n.d.). Retrieved October 11th, 2018, from http://thesaurus.yourdictionary.com/know-it-all
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