Where does the word goodbye come from?

We say it dozens of times a week, usually while already halfway out the door. Goodbye feels like one of the simplest words in English. But it is actually a whole sentence that has been folded up, squashed, and had one of its key words quietly swapped for another.

The short answer

Goodbye began as God be with ye, a farewell blessing in use by the late 1300s. Over the following centuries it was squeezed into one word. By the 1570s a form spelled godbwye was in use, and the spelling good-bye is recorded from the 1590s.

The real story

Long farewells are a nuisance when someone is getting on a horse. So people did what speakers always do with phrases they use constantly: they wore them down. Sixteenth-century writers left a trail of half-melted versions, including spellings such as God be wy you and God b’uy. Etymologists trace a path through forms like God be wi’ ye, God bwe ye and godby’e, each one a little shorter than the last.

Then came the swap. English already had a family of everyday greetings that started with good: good morning, good day, good evening, good night. Once godbye no longer sounded like a prayer, speakers seem to have assumed it belonged to that family too, and God drifted into good. Dictionaries put this down to the influence of those parallel phrases. It is a classic case of folk etymology, where people reshape a word to fit what they think it ought to mean.

The wearing-down has never really stopped. We now have goodby, g’bye and plain old bye, which is about as short as a farewell can get without becoming a wave.

It is worth pausing on how long all this took. The full blessing was around in the late 1300s, the squashed godbwye turns up in the 1570s, and the good spelling follows in the 1590s. Nobody decided to change the word. Millions of people saying it slightly lazier than their parents did the job for them, one farewell at a time. By the time anyone wrote the new spelling down, the old meaning had already slipped out the back door.

Why people get it wrong

The modern word gives no hint of its past. Split it in half and you get good, a perfectly sensible thing to wish someone, and bye, which sounds like a word in its own right. It looks like a complete little phrase already, so there is no reason to go hunting for a missing God.

It is also hard to hear the history in something said so casually. Few people saying ‘bye!’ into a phone would guess they are using the leftover crumbs of a sixteenth-century blessing.

“So every time you say bye, you’re handing out a tiny blessing and you didn’t even know. Bit like me. Full of wisdom, mostly unnoticed, usually stepped on.”