One cannot make a “concerted effort” all by one’s self. To work “in concert” is to work together with others. The prefix “con-” means “with.” One can, however, make a concentrated effort.
This is the ten-year anniversary 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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