Experts break down how the everyday farewell evolved from a four-word phrase with a deeper meaning.

"It is a neat illustration of how the language people use without thinking a dozen times a day can uncover history." ...

Say goodbye to abrupt departures, that awkward am-I-staying-or-going dance, and hovering anxiously (and conspicuously) near the door. There's an art to bidding your host adieu, even if you're slipping ...