/ˈwɪðər/
[adverb] To what place or destination; used to ask where something is going, or to show the direction in which something moves. It can also be used in a broader sense to mean 'what will happen to' something in the future.
Whither and 'whether' are cousins — both descended from the same ancient word for 'which of two things.'
The word 'whither' reaches back to Old English, where it appeared as 'hwider', meaning 'to what place' or 'in what direction.' It was part of a rich family of directional question words that Old English speakers used to locate people and things in space. Just as 'hider' meant 'to this place' (surviving in our modern 'hither') and 'þider' meant 'to that place' (surviving as 'thither'), 'hwider' answered the question of movement toward an unknown destination. These three words formed a neat, logical system — here, there, and where — but all with an added sense of direction and motion that modern English has largely lost.
The roots run even deeper than Old English. 'Hwider' is believed to descend from Proto-Germanic *hwadre, which itself traces back to the Proto-Indo-European root *kʷo-, a fundamental questioning root that also gave Latin its 'qu-' words: quis (who), quod (what), and quo (to where). This ancient root is one of the most productive in all of Indo-European linguistics, spreading question words across dozens of languages over thousands of years. The same ancestral root that shaped 'whither' also quietly shaped the English word 'who', 'what', 'which', and even 'whether' — making them all distant relatives sharing the same genetic material.
The connection to 'whether' is particularly surprising and worth pausing over. Old English 'hwæþer' meant 'which of two', and it came from the same Proto-Germanic root *hwaz combined with a suffix suggesting a choice between alternatives. Over time, *hwaz → Old English hw- words → Middle English wh- words, and both 'whither' and 'whether' settled into their modern forms. By the Middle English period, 'whither' was spelled in various ways — 'wheder', 'whyder', 'whither' — as scribes tried to capture a sound that was slowly shifting. The word appears frequently in medieval texts, in the Bible translations of Wycliffe and later Tyndale, carrying pilgrims and prophets toward unnamed destinations.
During the Early Modern English period — the age of Shakespeare and the King James Bible — 'whither' was still completely natural and common. Shakespeare used it freely: 'Whither goest thou?' was not poetic decoration but everyday speech. The King James Bible of 1611 is filled with the word, giving it a sacred, solemn quality that would later cling to it long after it dropped from ordinary use. Phrases like 'whither thou goest, I will go' from the Book of Ruth lodged themselves so deeply in the cultural memory that they kept the word alive in religious and literary contexts even as spoken English moved away from it.
By the 18th and 19th centuries, 'whither' had begun to feel old-fashioned in everyday conversation, replaced simply by 'where' — which had grown flexible enough to handle both location and direction. English speakers began to lose the distinction between 'where are you?' (at what place?) and 'whither are you going?' (to what place?), collapsing both into the single word 'where.' Today, 'whither' survives mainly in formal writing, historical texts, and a special kind of journalistic or rhetorical question — 'Whither democracy?' or 'Whither the high street?' — where it signals not just direction but a concerned, searching inquiry into the future of something. In this way, a word born to move through physical space has come to move through time instead.