/blaɪnd/
[adjective] Unable to see, either completely or partially. The word is also used to describe situations where someone is unwilling to notice something or where something is hidden or hard to see.
The word 'blind' is so ancient it was already in use before English even existed as a language.
Few words in English carry as much weight as 'blind,' and few have roots that reach so deep into the soil of human history. The word comes from Old English 'blind,' meaning exactly what it means today — unable to see — and it was already fully formed when the Anglo-Saxons arrived in Britain in the 5th and 6th centuries. It belongs to the Proto-Germanic family, descending from the reconstructed root *blinda-, which was shared across the early Germanic languages. This makes 'blind' one of the oldest and most stable words in the English language, a word that has barely changed its shape or sound in over a thousand years.
The Proto-Germanic *blinda- itself likely grew from an even older Proto-Indo-European root, *bhlendh-, which carried a broader meaning of confusion, dimness, or a blurring of the senses. This root was not only about physical sight — it suggested a kind of mental cloudiness too, a state of being lost or disoriented. You can feel this ancient dual meaning still alive in modern English when we speak of someone being 'blind' to the truth or acting in 'blind' panic. The word has always held both a physical and a psychological dimension.
The same Proto-Germanic root *blinda- spread across the entire family of Germanic languages, and its relatives are easy to spot. Old High German had 'blint,' which became modern German 'blind.' Old Norse had 'blindr,' Dutch has 'blind,' and Swedish and Danish both keep 'blind.' This remarkable consistency shows just how central the concept was to the people who spoke these languages — it was a word too important and too universal to drift far from its original form.
When Old English developed into Middle English after the Norman Conquest of 1066, the word 'blind' survived almost untouched, even as French flooded the language with thousands of new words. This is a telling sign of a word's power: the Norman French had their own words for visual impairment, like 'aveugle' (which came from Latin 'ab oculis,' meaning 'away from the eyes'), but 'blind' was too deeply embedded in everyday English life to be replaced. The common people kept it, and it remained.
Over the centuries, 'blind' expanded its meaning in rich and sometimes surprising directions. By the medieval period it was being used figuratively to mean morally or intellectually unable to see the truth, and this usage became particularly powerful in religious writing — a sinner could be spiritually blind just as a person could be physically blind. Later, the word gave birth to a wide family of compound words and phrases: 'blindfold,' which originally meant to strike blind and only later came to mean covering the eyes; 'blind spot,' first used in the 17th century to describe a point on the eye with no receptors, and later borrowed by psychology to describe mental gaps in awareness; and the expression 'blind alley,' referring to a street with no exit, which became a metaphor for a plan going nowhere. Each new use kept that ancient core idea alive — of darkness, of something blocked, of a way forward that simply cannot be seen.