ㄸ
쌍디귿 (ssangdigeut)
A tight t with no puff of air, like the t in “stop.”
StrokesFour strokes: two narrow ㄷs side by side, each written top line first.
Easy to confuseㄷ — One ㄷ is soft, two are tense: 달 (moon) vs 딸 (daughter).
Examples
딸기
ttalgi
strawberry
떡
tteok
rice cake
땀
ttam
sweat