Chilli, Chili or Chile?

The three common spellings of the word are chilli, chili, and chile. All can be found in English Dictionaries.

• Chilli is the correct spelling according to the Oxford English Dictionary and the variation I've used in this website.
• Chili is commonly used in the USA, but its use is discouraged by some, as this word is more commonly used to refer to a popular Southwestern dish as well as to the mixture of cumin and other spices used to flavour it.
• Chile is the Latin American (uncommon elsewhere) spelling which refers specifically to this plant and its fruit. This orthography is universal in the Spanish-speaking world, although in some parts the plant and its fruit are better known as aji­.

The name of this plant bears no relation to Chile, the country, which is named after the Quechua word chin ("cold"), tchili ("snow"), or chilli ("where the land ends"). Chile is one of the Spanish-speaking countries where chillies are known as aji­.