

Or did it? (More on that later.) The earliest evidence I've found for the existence of bae is a chart generated on the website Rap Genius, which indicates that bae has been turning up in rap songs since 2005, although their search interface makes it hard to confirm.

Bae, on the other hand, has a pretty straightforward etymology: It started as a clipped form of baby or babe. The Oxford English Dictionary speculates that boo might come from beau, but ultimately judges its origin uncertain. Like boo, bae originates in African American English. Maybe kids today find the idea of a ghost frightening someone with an eerie "Boo!" about as sensible as a zombie snarling "Sweetheart!" or "Darling!" But never mind boo: it's time to get ready for bae, the latest monosyllabic pet name starting with B. However, it's been around long enough by now that some of you may well have grown up with it. Having associated the interjection boo with ghosts since childhood, it took me a while to get used to it as a term of endearment for one's (presumably living) significant other.
