Grammar columnist and expert June Casagrande describes when you should add an apostrophe to plural words in writing.

For grammar and punctuation nerds, a poorly placed apostrophe especially brings chills. But knowing when to use an apostrophe is definitely one of the most confusing grammar rules!

What about apostrophes? Rules for using an apostrophe can be confusing! No doubt you’ve seen people create a plural last name by adding an apostrophe—like the Jones’ or the Paulson’s.