nikkei-index

Spelling & Dictionary Insight

The English entry for Nikkei index is 12 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /ˈniːkeɪ ˈɪndɛks/. It sits outside the most-frequent rank tiers, which is often why uncommon words generate more spelling variants per reader. The dominant gloss from Wiktionary reads: "A Japanese stock market index; normally refers to the Nikkei 225, which is calculated by aggregating the share prices of 225 large Japanese companies quoted on the Tokyo Stock Exchange, and thus re...".

No misspelling variants are generated for Nikkei index in our index, suggesting the orthography follows predictable English patterns. It is not paired with a close-neighbour confusable in our dataset, which tends to mean the word is visually distinctive enough to stand on its own.

Etymologically, the entry records: Borrowed from Japanese 日(にっ)経(けい) (nikkei), an abbreviation of 日(に)本(ほん)経(けい)済(ざい)新(しん)聞(ぶん) (Nihon Keizai Shinbun, literally “Japan Economics Newspaper”), a Japanese newspaper which publishes the index. Root origin matters for spelling because borrowed morphemes (Greek, Latin, Old French, Old English) carry their source-language orthographic conventions into modern English, which is why historical etymology is often the cleanest predictor of whether a cluster like "-ough", "-eau", or "-tion" will appear. For readers arriving here from a spelling check, the authoritative guidance is: the correct English form is Nikkei index, spelled N-I-K-K-E-I- -I-N-D-E-X, and any other sequence of those letters, regardless of how natural it feels, is a misspelling in standard orthography.