Definition of Mr. Nice Guy
informal
: a man who treats people kindly : a nice man
—used chiefly in the phrase no more Mr. Nice Guy I'm tired of the way they treat me. From now on, no more Mr. Nice Guy!
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“Mr. Nice Guy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Mr.%20Nice%20Guy. Accessed 5 Jul. 2022.
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