Gait is a word whose modern spelling masks a fascinating collision in English vocabulary. Until the sixteenth century, it was spelled gate — identical to the word for a hinged entrance — creating persistent ambiguity. The two words are etymologically unrelated: gate (entrance) comes from Old English geat (opening, gap), while gate (manner of walking) comes from Old Norse gata (path, way, street). The respelling as gait was a deliberate disambiguation, one of the few cases where English orthography was intentionally modified to resolve homographic confusion.
The Old Norse origin of gait connects it to a family of Scandinavian words for roads and paths. Swedish gata, Norwegian gate, and Danish gade all mean street. In northern England and Scotland, where Norse influence was strongest, the word gate still means street or way in place names. York's street names preserve this perfectly: Micklegate (great street), Stonegate (stone-paved street), Coppergate (street of the cup-makers), and Walmgate. Walking
In equestrian terminology, gait acquired precise technical meanings. A horse has four natural gaits — walk, trot, canter, and gallop — each defined by a specific pattern of leg movements and moments of suspension. Some horse breeds have additional gaits: the Icelandic horse has the tölt, a smooth four-beat gait; the Tennessee Walking Horse has the running walk; the Paso Fino has the paso corto and paso largo.
Gait analysis has become a significant field in medicine and forensics. Physicians use gait analysis to diagnose neurological conditions — Parkinson's disease, cerebral palsy, and various neuropathies all produce characteristic gait abnormalities. Forensic gait analysis can identify individuals from surveillance footage based on their unique walking patterns. The manner in which a person walks is as distinctive as a fingerprint, shaped by skeletal structure, muscle balance, neurological function, and habit.
The word's journey from a Norse word for street to a medical and forensic term for walking patterns spans a thousand years and crosses multiple disciplines. At each stage, the core meaning persists: gait is about how living beings move through space, the characteristic rhythm and pattern of locomotion.