Consider this sentence: Ask your friend if they want to join us for dinner.
If you’re among those who would automatically change they want to he or she wants, you’re about to shudder (or perhaps become apoplectic). Last week, the American Dialect Society (ADS) announced that singular they is its Word of the Year for 2015.
Never mind that singular they is already common in American speech … or that Shakespeare and Jane Austen regularly used it … or that last year the Washington Post style guide officially adopted this aberration. You know in your heart of hearts that it’s just plain wrong.