Etymology

First attested in the Seokbo sangjeol (釋譜詳節 / 석보상절), 1447, as 닐굽 (Yale: nilkup).

Also attested in the Yongbi eocheonga (龍飛御天歌 / 용비어천가), 1447, as 닐굽 (Yale: nilkup).

Also attested in the Geumganggyeong samgahae (金剛經三家解 / 금강경삼가해), 1482, as 닐곱 (Yale: nilkop).

Pronunciation

• IPA^(key): /iɭɡo̞p̚/
• Phonetic hangeul: 일곱