I recently received a reviewer comment from a journal submission that asked me to

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> report how I dealt with outliers and **fringeliers**.
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I had not heard of the term "fringeliers" and when I googled, there were some articles, but no concise definition. So I thought it would be good to have a question like this that could clarify what "fringeliers" are and provide a definition both for myself and future people asking the same question.