/sniːz/
[verb] To suddenly push air out through your nose and mouth in a way you cannot control, usually because something is irritating the inside of your nose. It can also be used as a noun to describe this action.
The word 'sneeze' only exists because a medieval scribe made a typo that everyone decided to keep.
The story of 'sneeze' begins with an embarrassing accident — a copying error that somehow stuck. The original Old English word for this involuntary explosion of air was 'fnēosan', a wonderfully expressive verb whose breathy, consonant-heavy opening seemed almost designed to imitate the act itself. This evolved naturally into the Middle English word 'fnesen', which carried the same meaning and was used without any trouble for centuries.
Somewhere in the 15th century, however, a crucial shift happened. Scribes copying manuscripts began to misread the old letter 'fn-' as 'sn-', a far more common opening in English. The old letter forms for 'f' and a long 's' looked remarkably similar on the page, especially when written in the rapid hands of busy copyists. The error produced 'snesen', and then, by a process of gradual smoothing, 'sneeze'. The mistake was so natural-sounding — 'sn-' words in English very often relate to the nose, such as 'sniff', 'snort', 'snout', and 'snore' — that speakers simply adopted it without question.
This cluster of 'sn-' words is no coincidence. Linguists call it a 'phonestheme': a sound combination that carries a loose shared meaning across many words. Old English 'snȳtan' (to blow the nose) → Middle English 'snite' → dialectal English 'snite', and Old English 'nosu' → English 'nose' all belong to the same family of nasal-related sounds. When 'sneeze' slipped into this group by accident, it felt so right that nobody pushed back.
Before 'sneeze' fully took hold, another word competed for the same job: 'neeze', a perfectly respectable Middle English verb derived from the older 'fnesen' by a different route — simply dropping the opening consonant cluster. 'Neeze' survived long enough to appear in early printed books and even in some editions of the Bible, but it could not hold on. By the 17th century, 'sneeze' had won the contest completely, and 'neeze' faded into dialect use before disappearing almost entirely.
It is worth pausing to appreciate just how strange this history is. Most words change because of shifts in culture, the influence of foreign languages, or gradual changes in pronunciation. 'Sneeze' changed because someone misread a handwritten letter and the mistake sounded too good to correct. It is a small, human accident preserved in millions of daily conversations — every time someone sneezes, they are unknowingly repeating a medieval copying error. Language, it turns out, is full of such happy mistakes.