The word “soccer” originated in England, and was originally used to differentiate association football from its rugby cousin. Just as rugby football was shortened to “rugger”, the game of association football became known as “soccer” thanks to a shortening of the word “association”.

The rules of Association football were codified in England by the Football Association in 1863. The alternative name soccer was first coined in late 19th century England to help distinguish between several codes of football that were growing in popularity at that time, in particular rugby football.

The term soccer comes from Oxford "-er" slang, which was prevalent at the University of Oxford in England from about 1875, and is thought to have been borrowed from the slang of Rugby School. Initially spelt assoccer (a shortening of "association"), it was later reduced to the modern spelling.

The inventor of the nickname is said to be Charles Wredford Brown, who was an Oxford student around the time of Association Football’s inception. Legend has it, in 1863 shortly after the creation of Association Football, Wredford-Brown had some friends who asked him if he’d come play a game of “Rugger”, to which he replied he preferred “Soccer”.