'Briticism' originates from English, specifically from the word 'British' with the suffix '-ism', where 'British' refers to Great Britain and '-ism' denotes a distinctive practice or characteristic.

'Briticism' was formed in the mid-19th century by combining 'British' and '-ism', and has been used to refer to British English words or usages.

Initially, it meant 'a British characteristic or custom', but over time it evolved to specifically mean 'a word or phrase characteristic of British English'.