I participated in an ACES Twitter chat, Your Grammar Question Answered, Tuesday during which we chatted about the singular “they.” One of my co-chatters, @KUBremner, aka Lisa McLendon, noted that the singular “they” can be handy as an epicene — a word that has only one form for both masculine and feminine. So we could use the epicene “they/them/their” in a sentence such as this: Everyone picked up their pencils and began the test. “Their” refers to the indefinite pronoun “everyone.” Because we don’t know everyone’s sex, we use “their,” which sounds less formal than “his or her” and doesn’t[.....]