Using “per” to mean “according to,” as in “ship the widgets as per the instructions of the customer,” is rather old-fashioned business jargon and is not welcome in other contexts. “Per” is fine when used in phrases involving figures like “miles per gallon.”
This is the tenth year of the Common Errors in English Usage calendar. To celebrate, we are bringing back some of our favorite interesting, funny, but sometimes merely silly entries through the years before going on hiatus in 2016.
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