예순
yesun · TOPIK 1
sixty (native numeral)
yesun = yeo(seot) six + -sun, the tens ending shared with 쉰 (swin, fifty)
Native Korean tens above forty reuse the unit: 여섯 (six) shrinks to 예 and takes -순, giving 예순 (sixty). Sound hook: say YES, UNcle is sixty. The Sino-Korean twin is 육십 (yuksip), used for minutes and money; 예순 is mostly for ages.