一等

Adjective

 * 1)  first-class; first-rate; top; the best

Noun

 * 1) first-class, first-rate, top, the best

Etymology
Sometimes connected to. The relationship to Middle Korean is not clear. May be related to.

(2010) asserts that is "certainly a Korean loanword" from this word. However, Vovin's source for the Koreanic term is a document that is over 500 years newer than the first Japonic mention; it would have to be an earlier borrowing into Japanese.

Numeral

 * 1) one

Reconstruction notes
The twelfth-century wordlist transcribes this word, with no transparent Middle Korean reflex, with the Chinese characters. As the reconstructed Song dynasty pronunciation of these characters is, the numeral is conventionally reconstructed as or , the latter in order to enable a connection to 🇨🇬 and 🇨🇬.

The c. 760 poem Docheonsugwaneum-ga appears to write the locative particle as  instead of the expected  when following 一等, suggesting that an additional consonant, probably, may have followed the final nasal.