/wɜːrt/
[noun] A plant or herb, especially one used in cooking or medicine. The word is also used to describe the liquid made from mashed grain during the brewing of beer.
This humble word for 'plant' is secretly hiding inside dozens of everyday English words you use all the time.
The word 'wort' is one of the oldest words in the English language, stretching back to Old English 'wyrt', which simply meant a plant, herb, or root. This was not a fancy or poetic word — it was the everyday, working vocabulary of Anglo-Saxon farmers, healers, and cooks who needed a straightforward term for the green things they pulled from the earth. The Old English 'wyrt' itself descended from Proto-Germanic '*wurtiz', meaning a root or plant, and this same ancient root gave rise to similar words across the Germanic family of languages, including Old High German 'wurz' and Old Norse 'urt', both carrying the same basic sense of herb or plant.
Tracing further back, the Proto-Germanic '*wurtiz' is connected to the Proto-Indo-European root '*wréh₂ds', meaning a root. This ancient root also travelled into Latin as 'radix' (root), giving English 'radish' and 'radical', and into Greek as 'rhiza' (root), giving English 'rhizome'. So while the path is not identical, 'wort' and 'radish' are distant cousins, both descended from the same prehistoric idea of something that grows from the ground.
In the Old English and early Middle English periods, 'wort' was an enormously productive word. It appeared in hundreds of plant names, acting almost like a suffix to describe specific herbs and plants. This is the reason so many plant names in English end in '-wort' today: 'liverwort' was a plant believed to help the liver, 'lungwort' was thought to treat the lungs, 'spiderwort' was associated with spiders, and 'St. John's wort' was gathered on the feast day of St. John. These compounds follow an old tradition of naming plants by their supposed medicinal use or physical appearance, a practice deeply rooted in early European folk medicine.
As the English language moved through the Middle Ages and into the early modern period, the standalone use of 'wort' as a general word for 'plant' or 'herb' gradually faded from everyday speech. It became old-fashioned, replaced by the words 'herb' and 'plant' borrowed from Latin and French. However, 'wort' survived strongly in two specific contexts. The first was in those compound plant names, which continued to be used by herbalists, botanists, and country people. The second was in brewing: 'wort' came to describe the sweet, sugary liquid that is produced when malted grain is mashed in hot water before fermentation. This brewing sense is still very much alive today, used by professional brewers and home enthusiasts the world over.
The brewing meaning of 'wort' likely developed because the liquid was seen as the essential 'juice' or 'essence' of the grain — its plant-nature extracted into liquid form. There is something poetically satisfying about this: a word that once named every plant in the garden now lives on most actively in the language of beer-making, connecting the ancient agricultural world of Anglo-Saxon England to the modern craft brewery. It is a small word with a long memory, carrying inside it thousands of years of human relationship with the natural world.