Grammar columnist and expert June Casagrande dives into why we use the em dash and the AI myths associated with it.

McCarthy isn’t an em dash guy himself—more of a “three words and a period” guy. His prose style resembles an Ernest Hemingway who has still killed himself but managed to keep writing.

How to use hyphen, en dash and em dash? As mentioned above, use a hyphen in intimately related concepts such as toll-free, tie-in, well-known and more.