While the English word Christmas (Christ’s mass), and the German Weihnachen (Holy Night) are clearly connected to the celebrated Christian birth, the Swedish word ‘Jul’ has a much more vague origin.
Like with the English word ‘yule’, experts do not fully agree on where it originates. However, it is deemed likely that it comes from the Proto-Germanic word ‘jehwla’ which could have meant ‘party’ or ‘celebration’.
The word was taken early into the Nordics via the Old Finnish language in the form of ‘juhla’ meaning ‘festival’, and then again as ‘joulu’ meaning ‘jul’. There was already a big celebration of the winter solstice and the winter hunt around this time that was given the name ‘jol’ in Old Norse.
After the surge of Christianity through Europe in the 900’s, England and Germany aligned their word for Christmas, but in the Nordics they kept word ‘jul’. Instead they scheduled their pagan celebrations to occur at the same time as the Christian one, and eventually the two melted together. In the Nordic countries, we still see elements of the pagan ‘jol’ at Christmas time with the ‘Christmas goat’ for example.
In Sweden, Denmark and Norway, Christmas is called ‘jul’. In Finland, it is called ‘joulou’. In Iceland it is called ‘Jol’ and in Estonia, ‘joulud’.