Fate before strangeness
In present-day English, weird is the everyday label for what feels off: an awkward pause, a coincidence that lands too neatly, a person whose habits sit outside the local norm. Dictionaries now lead with strange, unusual, even unsettling. That reading is so familiar that it is easy to miss how recent it is. For most of the word's life, it did not describe oddity at all. It named fate.
The older noun sat beside destiny, fortune, and the lot assigned to a life. A person's weird was the course laid out, for good or ill. In that register the word could also mean a prophecy or an omen, and in Scots it could mean a spell or charm. Those senses linger in historical prose and in a handful of fixed phrases. The adjective that now dominates grew later, from a surviving collocation, a well-known tragedy, and a long slide from the supernatural toward the merely peculiar.
A native English inheritance
The origin of the word weird is native Germanic stock, not a loan from French or Latin. Old English had wyrd, a noun covering fate, chance, fortune, and destiny, and also the Fates as a group. Behind that noun sits an older idea of that which comes: what turns out, what comes to pass. Middle English kept the inheritance in a scatter of spellings, among them werde, wirde, and wierde. Late medieval use still allowed the power that sets events in motion, or what is destined to befall someone.
In southern standard English the everyday noun faded after the Middle Ages. By the sixteenth century it was largely out of ordinary prose. What kept it in view was a northern and Scots collocation, the weird sisters, a name for the three goddesses of destiny. Those figures mapped onto the classical Fates and onto the Norse Norns. Shakespeare brought the Scots phrase into Macbeth for the three witches. The First Folio spelling is weyward rather than the modern form; other early witnesses show weyard. In origin the first element was still a noun: sisters of fate. On stage, though, it was easy to hear as a describing word attached to the women themselves.
That hearing changed the grammar of the word. Once the phrase was famous, weird could peel away from sisters and stand alone as an adjective: belonging to fate, able to sway destiny, then witchlike, uncanny, unearthly.
Turning into what happens
Old English wyrd continues a Germanic noun reconstructed as wurdiz; some handbooks write wurthiz instead. Further back, the Indo-European root is wert-, to turn or to wind. The same family produced Old English weorðan, to become, and German werden. English still carries a faint trace of that verb in the old sense of worth, the one that survives in the curse that begins woe worth the day. The step from turning to becoming is a small one: what turns, in this picture, is what comes about. Fate is the turn of events.
Related words make the family visible. Old Saxon wurd and Old High German wurt both mean fate. Old Norse urðr is fate and also the name of one of the three Norns; modern Icelandic keeps urður. Specialists later restored the Old English spelling as the scholarly noun wyrd, a doublet used when the old sense of destiny is wanted without the modern adjective's coloring.
There is no prefix to peel off and no suffix that carries the meaning. Weird is a single inherited stem. Resemblances to weir, the dam, or to wired are accidents of English spelling, not historical links.
Witches, then oddity
The adjectival sense having power to control fate is already recorded around 1400, still locked inside weird sisters. The later sense uncanny or supernatural grew from how those sisters were pictured. In Germanic story they governed a human life. On the English stage, especially in eighteenth- and nineteenth-century productions of Macbeth, they looked odd and frightening. Witchcraft stuck to the word. A supplement to Johnson's dictionary published in 1818 glosses the adjective as skilled in witchcraft.
Writers of the early nineteenth century then used the adjective without sisters. Percy Shelley is often named as one of the first to use it steadily in print for something supernatural or uncanny: night itself can sound unearthly in his verse. A weaker reading, odd-looking, strange, disturbingly different, is in use by about 1820. From there the casual modern meaning, bizarre, out of the ordinary, a person with unusual habits, is a further softening. Later criticism coined weird fiction for a strain of macabre speculative stories, a label that still leans on the older unearthly shade rather than on mere quirk.
The noun did not vanish everywhere at the same pace. Scots kept a dense set of uses: fate, a destined event, a person thought to have occult knowledge. Walter Scott could still treat a weird as a doom laid on someone. The older English and Scots phrase dree one's weird, to endure one's appointed lot, preserves the noun in a fixed frame. Slang much later added a verb, to weird out, which has nothing to do with destiny and everything to do with unease.
The main references agree on the native Germanic descent and on Shakespeare's part in keeping the word in public view. They differ a little on how fully the noun had died in sixteenth-century standard English, and on whether the adjective should be dated from late Middle English collocations or from the later extraction after Macbeth. That is a difference of emphasis, not a rival origin story.
A Norn still in the family
The clearest landmark is Old Norse Urðr. She is both a proper name and a common noun for fate, a close cousin of Old English wyrd. English weird walked from that circle of destiny-words, through a trio of stage witches, into the casual vocabulary of strangeness. The modern adjective still carries a faint chill because the path ran through the supernatural. The chill is leftover atmosphere, not the original cargo.